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Finding the Fourth Proportional to 15,331, 22,996.50 and 4,387

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Solution

The fourth proportional to 15,331, 22,996.50 and 4,387 is: 6,580.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331 : 22,996.50 = 4,387 : x
  2. Step 2: Convert to fraction form
    15,331/22,996.50 = 4,387/x
  3. Step 3: Cross multiply
    15,331x = 22,996.50 × 4,387
  4. Step 4: Simplify right side
    15,331x = 100,885,645.50
  5. Step 5: Solve for x
    x = 100,885,645.50/15,331
  6. Step 6: Final answer
    x = 6,580.50

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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.