what is the fourth dimension

The fourth dimension is a mathematical extension of the concept of three- dimensional space. In three-dimensional space, three numbers, called dimensions, are needed to describe the sizes or locations of objects in the everyday world. The fourth dimension is a space with four spatial dimensions, requiring four parameters to specify a point in it. Mathematically, it is a space that needs four numbers to locate a point. The concept of a fourth dimension has been popularized in various ways, but it is important to note that the fourth dimension is a theoretical mathematical concept, and its existence in the physical world is still a topic of theoretical discussion and debate