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Finding the Fourth Proportional to 12,171.92, 18,260.92 and 6,623.76

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Solution

The fourth proportional to 12,171.92, 18,260.92 and 6,623.76 is: 9,937.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,171.92 : 18,260.92 = 6,623.76 : x
  2. Step 2: Convert to fraction form
    12,171.92/18,260.92 = 6,623.76/x
  3. Step 3: Cross multiply
    12,171.92x = 18,260.92 × 6,623.76
  4. Step 4: Simplify right side
    12,171.92x = 120,955,951.46
  5. Step 5: Solve for x
    x = 120,955,951.46/12,171.92
  6. Step 6: Final answer
    x = 9,937.29

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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.