Home / 31,411.12-47,098.22-12,691.75

Finding the Fourth Proportional to 31,411.12, 47,098.22 and 12,691.75

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Solution

The fourth proportional to 31,411.12, 47,098.22 and 12,691.75 is: 19,030.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,411.12 : 47,098.22 = 12,691.75 : x
  2. Step 2: Convert to fraction form
    31,411.12/47,098.22 = 12,691.75/x
  3. Step 3: Cross multiply
    31,411.12x = 47,098.22 × 12,691.75
  4. Step 4: Simplify right side
    31,411.12x = 597,758,833.69
  5. Step 5: Solve for x
    x = 597,758,833.69/31,411.12
  6. Step 6: Final answer
    x = 19,030.17

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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.