Answer:
9.5 inches width
Explanation:
solve it using the proportion method
height/ width = 5/19
so let the width be x
so if height: width:: height: width
5 : 19 :: 2.5 : x
product of extremes = product of means
5 x x = 19 x 2.5
x= 47.5/5
x= 9.5 inches (width )