Home / 20,651.12-30,951.30-9,542.78

Finding the Fourth Proportional to 20,651.12, 30,951.30 and 9,542.78

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Solution

The fourth proportional to 20,651.12, 30,951.30 and 9,542.78 is: 14,302.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.12 : 30,951.30 = 9,542.78 : x
  2. Step 2: Convert to fraction form
    20,651.12/30,951.30 = 9,542.78/x
  3. Step 3: Cross multiply
    20,651.12x = 30,951.30 × 9,542.78
  4. Step 4: Simplify right side
    20,651.12x = 295,361,446.61
  5. Step 5: Solve for x
    x = 295,361,446.61/20,651.12
  6. Step 6: Final answer
    x = 14,302.44

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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.