Home / 20,962.13-31,443.19-5,379.75

Finding the Fourth Proportional to 20,962.13, 31,443.19 and 5,379.75

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Solution

The fourth proportional to 20,962.13, 31,443.19 and 5,379.75 is: 8,069.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.13 : 31,443.19 = 5,379.75 : x
  2. Step 2: Convert to fraction form
    20,962.13/31,443.19 = 5,379.75/x
  3. Step 3: Cross multiply
    20,962.13x = 31,443.19 × 5,379.75
  4. Step 4: Simplify right side
    20,962.13x = 169,156,487.95
  5. Step 5: Solve for x
    x = 169,156,487.95/20,962.13
  6. Step 6: Final answer
    x = 8,069.63

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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.