Home / 20,753.97-31,132.89-8,270.97

Finding the Fourth Proportional to 20,753.97, 31,132.89 and 8,270.97

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Solution

The fourth proportional to 20,753.97, 31,132.89 and 8,270.97 is: 12,407.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.97 : 31,132.89 = 8,270.97 : x
  2. Step 2: Convert to fraction form
    20,753.97/31,132.89 = 8,270.97/x
  3. Step 3: Cross multiply
    20,753.97x = 31,132.89 × 8,270.97
  4. Step 4: Simplify right side
    20,753.97x = 257,499,199.20
  5. Step 5: Solve for x
    x = 257,499,199.20/20,753.97
  6. Step 6: Final answer
    x = 12,407.23

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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.