Home / 20,634.29-30,958.10-8,147.39

Finding the Fourth Proportional to 20,634.29, 30,958.10 and 8,147.39

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Solution

The fourth proportional to 20,634.29, 30,958.10 and 8,147.39 is: 12,223.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.29 : 30,958.10 = 8,147.39 : x
  2. Step 2: Convert to fraction form
    20,634.29/30,958.10 = 8,147.39/x
  3. Step 3: Cross multiply
    20,634.29x = 30,958.10 × 8,147.39
  4. Step 4: Simplify right side
    20,634.29x = 252,227,549.38
  5. Step 5: Solve for x
    x = 252,227,549.38/20,634.29
  6. Step 6: Final answer
    x = 12,223.71

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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.