Home / 22,147.38-30,565.20-12,717.78

Finding the Fourth Proportional to 22,147.38, 30,565.20 and 12,717.78

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Solution

The fourth proportional to 22,147.38, 30,565.20 and 12,717.78 is: 17,551.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,147.38 : 30,565.20 = 12,717.78 : x
  2. Step 2: Convert to fraction form
    22,147.38/30,565.20 = 12,717.78/x
  3. Step 3: Cross multiply
    22,147.38x = 30,565.20 × 12,717.78
  4. Step 4: Simplify right side
    22,147.38x = 388,721,489.26
  5. Step 5: Solve for x
    x = 388,721,489.26/22,147.38
  6. Step 6: Final answer
    x = 17,551.58

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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.