Home / 31,414.11-47,108.72-13,871.64

Finding the Fourth Proportional to 31,414.11, 47,108.72 and 13,871.64

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Solution

The fourth proportional to 31,414.11, 47,108.72 and 13,871.64 is: 20,801.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,414.11 : 47,108.72 = 13,871.64 : x
  2. Step 2: Convert to fraction form
    31,414.11/47,108.72 = 13,871.64/x
  3. Step 3: Cross multiply
    31,414.11x = 47,108.72 × 13,871.64
  4. Step 4: Simplify right side
    31,414.11x = 653,475,135.34
  5. Step 5: Solve for x
    x = 653,475,135.34/31,414.11
  6. Step 6: Final answer
    x = 20,801.96

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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.