Home / 20,630.17-28,468.02-12,132.61

Finding the Fourth Proportional to 20,630.17, 28,468.02 and 12,132.61

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Solution

The fourth proportional to 20,630.17, 28,468.02 and 12,132.61 is: 16,742.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.17 : 28,468.02 = 12,132.61 : x
  2. Step 2: Convert to fraction form
    20,630.17/28,468.02 = 12,132.61/x
  3. Step 3: Cross multiply
    20,630.17x = 28,468.02 × 12,132.61
  4. Step 4: Simplify right side
    20,630.17x = 345,391,387.34
  5. Step 5: Solve for x
    x = 345,391,387.34/20,630.17
  6. Step 6: Final answer
    x = 16,742.05

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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.