Astrology is amazing. It is a way to understand who we are, where we come from and where we are most likely to go. When it comes to the 4th house, this house is about the home, your family, storage areas, real estate, emotions comfort as well as fulfillment, your mother, and your roots. This house is under the horizon along with the 2nd house to the 12th house. Houses about the horizon are 8-12.
This house correlates with the sign Cancer, the Moon is the ruler of the fourth house, with water as the element related to it. The 4th house is an angular house with a lot of energy in the form of the cardinal sign Cancer. This angular house makes the backbone of your chart and is where you can find the IC or imum coeli latin for the bottom of the sky referring back to below the horizon. Planets here shows how you related to those around you what attributes to your emotional stability, comforts and the quality of your family. Signs here gives a layout of how you are internally, in an emotional sense.
Going through the personal planets in this house meaning the Sun, Moon, Mercury, Venus, and Mars. You will see these playing out almost as if you have a Cancer Sun, Moon, Mercury, Venus, and Mars. Sun in the 4th house is like have a Sun/Moon conjunction. You are in touch with your emotions and identify with your roots and family. Though, you will have to make a conscious effort to put out the positive aspects of the moon because any planet close to the Sun combust. Sun in the 4th is not Sun conjunct Moon, but you will see a lot of similarities. Moon in the 4th leads you to be true to your self emotionally, you can understand the emotions of others well and are more receptive than most concerning feelings making you a bit psychic. This is a suitable placement for the Moon overall. Mercury in the 4th house tells you are comfortable or are learning about emotional communicating. Speaking with women, your mother, being about to comfort others with what you say or right is a skill you have or can acquire. You will have a knack for having skill in relation to the 4th house meaning you can be a chief, a fisherman, scuba diver, security, dealing with securities, or history. This placement is like Mercury/Moon conjunction though not to the same extreme. Venus in the 4th house shows someone with a mother or family who are beautiful, money savvy or have really strong values. Mars here is another thing entirely. This creates a lot of energy competitions and arguments in the home life or with the mother and family. Though, it can lead to someone who has learned emotional strength. Also, someone who is comfortable as the leader. This leads someone to go after things relating to the 4th house like real property, learning about your history, etc.
The 4th house and the 10th are on the same axis. Where the 4th house is the root, the 10th is the top of the tree. The fourth house is the bottom of the chart, the 10th house is the top of the natal chart, the highest you may go. They are two sides of the same coin. Though it tells you that emotions, reactions, and family/personal matters should stay at home. Where the 10th house is how you should behave with those in the outside world, and your career.