Home / 20,740.76-31,115.91-6,508.43

Finding the Fourth Proportional to 20,740.76, 31,115.91 and 6,508.43

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Solution

The fourth proportional to 20,740.76, 31,115.91 and 6,508.43 is: 9,764.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.76 : 31,115.91 = 6,508.43 : x
  2. Step 2: Convert to fraction form
    20,740.76/31,115.91 = 6,508.43/x
  3. Step 3: Cross multiply
    20,740.76x = 31,115.91 × 6,508.43
  4. Step 4: Simplify right side
    20,740.76x = 202,515,722.12
  5. Step 5: Solve for x
    x = 202,515,722.12/20,740.76
  6. Step 6: Final answer
    x = 9,764.14

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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.