Home / 31,671.85-43,711.79-18,240.49

Finding the Fourth Proportional to 31,671.85, 43,711.79 and 18,240.49

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Solution

The fourth proportional to 31,671.85, 43,711.79 and 18,240.49 is: 25,174.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,671.85 : 43,711.79 = 18,240.49 : x
  2. Step 2: Convert to fraction form
    31,671.85/43,711.79 = 18,240.49/x
  3. Step 3: Cross multiply
    31,671.85x = 43,711.79 × 18,240.49
  4. Step 4: Simplify right side
    31,671.85x = 797,324,468.38
  5. Step 5: Solve for x
    x = 797,324,468.38/31,671.85
  6. Step 6: Final answer
    x = 25,174.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.