Example Floor Plan Frozen Yogurt Floor Plan Of My House Project?

Floor Plan of My House Project? - example floor plan frozen yogurt

I have a quick question to a plant for my house. I'm doing a project where I get the size of my house, then select a scaling factor, the dimensions of the scale, then you draw a scale drawing. I have my size and my scaling factor, but can not find a way to convert. For example, my scaling factor of 1 / 8 inch = 1 foot. My first real size is 15'4 "by 15'4" by 17'9 "by 15'8". I started it and I have a height of fifteen until 1 7 / 8 inches, but what is represented by four inches? Can anyone help?