Finding the Fourth Proportional to 15,672,221.28, 21,627,246.20 and 8,702,717.02
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Solution
The fourth proportional to 15,672,221.28, 21,627,246.20 and 8,702,717.02 is: 12,009,516.73
Step by Step Solution
- Step 1: Write the proportion equation
15,672,221.28 : 21,627,246.20 = 8,702,717.02 : x - Step 2: Convert to fraction form
15,672,221.28/21,627,246.20 = 8,702,717.02/x - Step 3: Cross multiply
15,672,221.28x = 21,627,246.20 × 8,702,717.02 - Step 4: Simplify right side
15,672,221.28x = 188,215,803,600,470.31 - Step 5: Solve for x
x = 188,215,803,600,470.31/15,672,221.28 - Step 6: Final answer
x = 12,009,516.73
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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.