Home / 20,764.18-31,143-7,613.38

Finding the Fourth Proportional to 20,764.18, 31,143 and 7,613.38

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Solution

The fourth proportional to 20,764.18, 31,143 and 7,613.38 is: 11,418.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.18 : 31,143 = 7,613.38 : x
  2. Step 2: Convert to fraction form
    20,764.18/31,143 = 7,613.38/x
  3. Step 3: Cross multiply
    20,764.18x = 31,143 × 7,613.38
  4. Step 4: Simplify right side
    20,764.18x = 237,103,493.34
  5. Step 5: Solve for x
    x = 237,103,493.34/20,764.18
  6. Step 6: Final answer
    x = 11,418.87

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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.