Home / 31,426.76-47,172.94-13,908.90

Finding the Fourth Proportional to 31,426.76, 47,172.94 and 13,908.90

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Solution

The fourth proportional to 31,426.76, 47,172.94 and 13,908.90 is: 20,877.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,426.76 : 47,172.94 = 13,908.90 : x
  2. Step 2: Convert to fraction form
    31,426.76/47,172.94 = 13,908.90/x
  3. Step 3: Cross multiply
    31,426.76x = 47,172.94 × 13,908.90
  4. Step 4: Simplify right side
    31,426.76x = 656,123,705.17
  5. Step 5: Solve for x
    x = 656,123,705.17/31,426.76
  6. Step 6: Final answer
    x = 20,877.87

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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.