Home / 31,474.27-47,187.82-18,991.34

Finding the Fourth Proportional to 31,474.27, 47,187.82 and 18,991.34

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Solution

The fourth proportional to 31,474.27, 47,187.82 and 18,991.34 is: 28,472.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,474.27 : 47,187.82 = 18,991.34 : x
  2. Step 2: Convert to fraction form
    31,474.27/47,187.82 = 18,991.34/x
  3. Step 3: Cross multiply
    31,474.27x = 47,187.82 × 18,991.34
  4. Step 4: Simplify right side
    31,474.27x = 896,160,003.97
  5. Step 5: Solve for x
    x = 896,160,003.97/31,474.27
  6. Step 6: Final answer
    x = 28,472.78

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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.