Home / 22,561.68-31,134.74-12,489.90

Finding the Fourth Proportional to 22,561.68, 31,134.74 and 12,489.90

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Solution

The fourth proportional to 22,561.68, 31,134.74 and 12,489.90 is: 17,235.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,561.68 : 31,134.74 = 12,489.90 : x
  2. Step 2: Convert to fraction form
    22,561.68/31,134.74 = 12,489.90/x
  3. Step 3: Cross multiply
    22,561.68x = 31,134.74 × 12,489.90
  4. Step 4: Simplify right side
    22,561.68x = 388,869,726.68
  5. Step 5: Solve for x
    x = 388,869,726.68/22,561.68
  6. Step 6: Final answer
    x = 17,235.85

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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.