Home / 31,821.57-47,732.40-10,761.66

Finding the Fourth Proportional to 31,821.57, 47,732.40 and 10,761.66

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Solution

The fourth proportional to 31,821.57, 47,732.40 and 10,761.66 is: 16,142.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,821.57 : 47,732.40 = 10,761.66 : x
  2. Step 2: Convert to fraction form
    31,821.57/47,732.40 = 10,761.66/x
  3. Step 3: Cross multiply
    31,821.57x = 47,732.40 × 10,761.66
  4. Step 4: Simplify right side
    31,821.57x = 513,679,859.78
  5. Step 5: Solve for x
    x = 513,679,859.78/31,821.57
  6. Step 6: Final answer
    x = 16,142.51

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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.