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Finding the Fourth Proportional to 15,680.76, 23,499 and 8,663.92

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Solution

The fourth proportional to 15,680.76, 23,499 and 8,663.92 is: 12,983.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,680.76 : 23,499 = 8,663.92 : x
  2. Step 2: Convert to fraction form
    15,680.76/23,499 = 8,663.92/x
  3. Step 3: Cross multiply
    15,680.76x = 23,499 × 8,663.92
  4. Step 4: Simplify right side
    15,680.76x = 203,593,456.08
  5. Step 5: Solve for x
    x = 203,593,456.08/15,680.76
  6. Step 6: Final answer
    x = 12,983.65

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1.5x scale

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.