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Finding the Fourth Proportional to 12,337.92, 18,489.60 and 6,485.76

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Solution

The fourth proportional to 12,337.92, 18,489.60 and 6,485.76 is: 9,719.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,337.92 : 18,489.60 = 6,485.76 : x
  2. Step 2: Convert to fraction form
    12,337.92/18,489.60 = 6,485.76/x
  3. Step 3: Cross multiply
    12,337.92x = 18,489.60 × 6,485.76
  4. Step 4: Simplify right side
    12,337.92x = 119,919,108.10
  5. Step 5: Solve for x
    x = 119,919,108.10/12,337.92
  6. Step 6: Final answer
    x = 9,719.56

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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.