Question

The scale of a map is 7ft = 14.4 mi map: ________ ft actual: 24.6 mi

Answer 1

The answer to the question can be found by setting up a proportion such as 7/14.4=x/24.6 which gives you 11.9583 ft

Answer 2

You can create a proportion

map:ft       7             x
_____________________
actual:m   14.4       24.6

then cross multiply 14.4x/172.2
then divide 172.2 divided by 14.4 
Answer: 11.958333333333........