It will cost $56 to buy 32 ft of crown molding.
Step-by-step explanation
Suppose, the cost of 32 ft of crown molding is 
 dollar.
 dollar. 
Given that, 8 ft length crown molding costs $14. 
According to the ratio of "length" of crown molding to the "cost", the equation will be.......

So, it will cost $56 to buy 32 ft of crown molding.