Finding the Fourth Proportional to 21,457,621.26, 29,612,078.56 and 11,668,637.97
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Solution
The fourth proportional to 21,457,621.26, 29,612,078.56 and 11,668,637.97 is: 16,103,025.58
Step by Step Solution
- Step 1: Write the proportion equation
21,457,621.26 : 29,612,078.56 = 11,668,637.97 : x - Step 2: Convert to fraction form
21,457,621.26/29,612,078.56 = 11,668,637.97/x - Step 3: Cross multiply
21,457,621.26x = 29,612,078.56 × 11,668,637.97 - Step 4: Simplify right side
21,457,621.26x = 345,532,624,154,313.75 - Step 5: Solve for x
x = 345,532,624,154,313.75/21,457,621.26 - Step 6: Final answer
x = 16,103,025.58
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.