an object 6.9 feet tall casts a shadow that is 20.7 feet long. how long in feet would the shadow be for an object which is 19.5 feet tall?

Question

an object 6.9 feet tall casts a shadow that is 20.7 feet long. how long in feet would the shadow be for an object which is 19.5 feet tall?

Answer 1

Set up a simple proportion.  The ratio of the 6.9 foot tall object to its shadow (20.7 feet) is the same as the ratio of a 19.5 foot tall object to its shadow (x feet):

 

6.9/20.7 = 19.5/x

 

Solve for x.