If a boy is 5 ft. tall and his shadow is 4 ft. and the shadow of a flagpole is 16 ft., determine the height of the flagpole.

With the boy's given height and shadow length, we can set up a proportion.

height/shadow = 5/4
We can represent the height of the flagpole with the variable x.
5/4 = x/16
cross multiply
4x = 80
x= 20

The height of the flagpole is 20 ft.

The right answer should be 6 but your not very specific