Home / 20,761.29-31,142.48-6,721.83

Finding the Fourth Proportional to 20,761.29, 31,142.48 and 6,721.83

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Solution

The fourth proportional to 20,761.29, 31,142.48 and 6,721.83 is: 10,082.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.29 : 31,142.48 = 6,721.83 : x
  2. Step 2: Convert to fraction form
    20,761.29/31,142.48 = 6,721.83/x
  3. Step 3: Cross multiply
    20,761.29x = 31,142.48 × 6,721.83
  4. Step 4: Simplify right side
    20,761.29x = 209,334,422.73
  5. Step 5: Solve for x
    x = 209,334,422.73/20,761.29
  6. Step 6: Final answer
    x = 10,082.92

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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.