Home / 20,753.11-31,129.87-5,961.99

Finding the Fourth Proportional to 20,753.11, 31,129.87 and 5,961.99

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Solution

The fourth proportional to 20,753.11, 31,129.87 and 5,961.99 is: 8,943.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.11 : 31,129.87 = 5,961.99 : x
  2. Step 2: Convert to fraction form
    20,753.11/31,129.87 = 5,961.99/x
  3. Step 3: Cross multiply
    20,753.11x = 31,129.87 × 5,961.99
  4. Step 4: Simplify right side
    20,753.11x = 185,595,817.99
  5. Step 5: Solve for x
    x = 185,595,817.99/20,753.11
  6. Step 6: Final answer
    x = 8,943.04

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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.