Kevin is 4 feet tall. he casts a shadow that is 3 feet. when kevin grows in size, he grows 9 times his size! what is the length of his new shadow?

Kevin grows 9 times his size, which means that his new height is 9 times his old height. Multiply his old height by this number:



Kevin's new height is 36 feet.

Set up a proportion:



The numerator represents the length of the shadow, and the denominator represents Kevin's height.

Cross multiply the fractions:



Divide both sides by 4 to get x by itself:



The length of Kevin's new shadow is 27 feet.