Home / 10,520.76-15,781.17-4,276.37

Finding the Fourth Proportional to 10,520.76, 15,781.17 and 4,276.37

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Solution

The fourth proportional to 10,520.76, 15,781.17 and 4,276.37 is: 6,414.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.76 : 15,781.17 = 4,276.37 : x
  2. Step 2: Convert to fraction form
    10,520.76/15,781.17 = 4,276.37/x
  3. Step 3: Cross multiply
    10,520.76x = 15,781.17 × 4,276.37
  4. Step 4: Simplify right side
    10,520.76x = 67,486,121.95
  5. Step 5: Solve for x
    x = 67,486,121.95/10,520.76
  6. Step 6: Final answer
    x = 6,414.57

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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.