Home / 20,332.20-30,498.30-18,517.80

Finding the Fourth Proportional to 20,332.20, 30,498.30 and 18,517.80

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Solution

The fourth proportional to 20,332.20, 30,498.30 and 18,517.80 is: 27,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.20 : 30,498.30 = 18,517.80 : x
  2. Step 2: Convert to fraction form
    20,332.20/30,498.30 = 18,517.80/x
  3. Step 3: Cross multiply
    20,332.20x = 30,498.30 × 18,517.80
  4. Step 4: Simplify right side
    20,332.20x = 564,761,419.74
  5. Step 5: Solve for x
    x = 564,761,419.74/20,332.20
  6. Step 6: Final answer
    x = 27,776.70

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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.