Home / 20,910.74-31,357.11-7,753.46

Finding the Fourth Proportional to 20,910.74, 31,357.11 and 7,753.46

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Solution

The fourth proportional to 20,910.74, 31,357.11 and 7,753.46 is: 11,626.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.74 : 31,357.11 = 7,753.46 : x
  2. Step 2: Convert to fraction form
    20,910.74/31,357.11 = 7,753.46/x
  3. Step 3: Cross multiply
    20,910.74x = 31,357.11 × 7,753.46
  4. Step 4: Simplify right side
    20,910.74x = 243,126,098.10
  5. Step 5: Solve for x
    x = 243,126,098.10/20,910.74
  6. Step 6: Final answer
    x = 11,626.85

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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.