Home / 18,630.12-25,691.92-11,917.87

Finding the Fourth Proportional to 18,630.12, 25,691.92 and 11,917.87

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Solution

The fourth proportional to 18,630.12, 25,691.92 and 11,917.87 is: 16,435.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.12 : 25,691.92 = 11,917.87 : x
  2. Step 2: Convert to fraction form
    18,630.12/25,691.92 = 11,917.87/x
  3. Step 3: Cross multiply
    18,630.12x = 25,691.92 × 11,917.87
  4. Step 4: Simplify right side
    18,630.12x = 306,192,962.61
  5. Step 5: Solve for x
    x = 306,192,962.61/18,630.12
  6. Step 6: Final answer
    x = 16,435.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.