Home / 20,732.38-31,103.42-6,881.38

Finding the Fourth Proportional to 20,732.38, 31,103.42 and 6,881.38

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Solution

The fourth proportional to 20,732.38, 31,103.42 and 6,881.38 is: 10,323.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.38 : 31,103.42 = 6,881.38 : x
  2. Step 2: Convert to fraction form
    20,732.38/31,103.42 = 6,881.38/x
  3. Step 3: Cross multiply
    20,732.38x = 31,103.42 × 6,881.38
  4. Step 4: Simplify right side
    20,732.38x = 214,034,452.32
  5. Step 5: Solve for x
    x = 214,034,452.32/20,732.38
  6. Step 6: Final answer
    x = 10,323.68

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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.