Home / 31,486.91-47,229.60-12,761.94

Finding the Fourth Proportional to 31,486.91, 47,229.60 and 12,761.94

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Solution

The fourth proportional to 31,486.91, 47,229.60 and 12,761.94 is: 19,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,486.91 : 47,229.60 = 12,761.94 : x
  2. Step 2: Convert to fraction form
    31,486.91/47,229.60 = 12,761.94/x
  3. Step 3: Cross multiply
    31,486.91x = 47,229.60 × 12,761.94
  4. Step 4: Simplify right side
    31,486.91x = 602,741,321.42
  5. Step 5: Solve for x
    x = 602,741,321.42/31,486.91
  6. Step 6: Final answer
    x = 19,142.60

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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.