Home / 10,161.92-15,231.76-5,231.86

Finding the Fourth Proportional to 10,161.92, 15,231.76 and 5,231.86

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Solution

The fourth proportional to 10,161.92, 15,231.76 and 5,231.86 is: 7,842.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,161.92 : 15,231.76 = 5,231.86 : x
  2. Step 2: Convert to fraction form
    10,161.92/15,231.76 = 5,231.86/x
  3. Step 3: Cross multiply
    10,161.92x = 15,231.76 × 5,231.86
  4. Step 4: Simplify right side
    10,161.92x = 79,690,414.14
  5. Step 5: Solve for x
    x = 79,690,414.14/10,161.92
  6. Step 6: Final answer
    x = 7,842.06

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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.