Home / 20,982.52-31,473.64-8,502.36

Finding the Fourth Proportional to 20,982.52, 31,473.64 and 8,502.36

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Solution

The fourth proportional to 20,982.52, 31,473.64 and 8,502.36 is: 12,753.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.52 : 31,473.64 = 8,502.36 : x
  2. Step 2: Convert to fraction form
    20,982.52/31,473.64 = 8,502.36/x
  3. Step 3: Cross multiply
    20,982.52x = 31,473.64 × 8,502.36
  4. Step 4: Simplify right side
    20,982.52x = 267,600,217.79
  5. Step 5: Solve for x
    x = 267,600,217.79/20,982.52
  6. Step 6: Final answer
    x = 12,753.48

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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.