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Finding the Fourth Proportional to 10,313, 15,472.14 and 3,387.56

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Solution

The fourth proportional to 10,313, 15,472.14 and 3,387.56 is: 5,082.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,313 : 15,472.14 = 3,387.56 : x
  2. Step 2: Convert to fraction form
    10,313/15,472.14 = 3,387.56/x
  3. Step 3: Cross multiply
    10,313x = 15,472.14 × 3,387.56
  4. Step 4: Simplify right side
    10,313x = 52,412,802.58
  5. Step 5: Solve for x
    x = 52,412,802.58/10,313
  6. Step 6: Final answer
    x = 5,082.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.