Finding the Fourth Proportional to 20,627,371.92, 28,466,247.36 and 11,335,519.68
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Solution
The fourth proportional to 20,627,371.92, 28,466,247.36 and 11,335,519.68 is: 15,643,277.70
Step by Step Solution
- Step 1: Write the proportion equation
20,627,371.92 : 28,466,247.36 = 11,335,519.68 : x - Step 2: Convert to fraction form
20,627,371.92/28,466,247.36 = 11,335,519.68/x - Step 3: Cross multiply
20,627,371.92x = 28,466,247.36 × 11,335,519.68 - Step 4: Simplify right side
20,627,371.92x = 322,679,707,165,028 - Step 5: Solve for x
x = 322,679,707,165,028/20,627,371.92 - Step 6: Final answer
x = 15,643,277.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.