Home / 20,434.38-28,202.05-12,474.90

Finding the Fourth Proportional to 20,434.38, 28,202.05 and 12,474.90

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Solution

The fourth proportional to 20,434.38, 28,202.05 and 12,474.90 is: 17,216.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.38 : 28,202.05 = 12,474.90 : x
  2. Step 2: Convert to fraction form
    20,434.38/28,202.05 = 12,474.90/x
  3. Step 3: Cross multiply
    20,434.38x = 28,202.05 × 12,474.90
  4. Step 4: Simplify right side
    20,434.38x = 351,817,753.55
  5. Step 5: Solve for x
    x = 351,817,753.55/20,434.38
  6. Step 6: Final answer
    x = 17,216.95

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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.