Home / 20,818.97-31,249.57-18,462.18

Finding the Fourth Proportional to 20,818.97, 31,249.57 and 18,462.18

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Solution

The fourth proportional to 20,818.97, 31,249.57 and 18,462.18 is: 27,711.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.97 : 31,249.57 = 18,462.18 : x
  2. Step 2: Convert to fraction form
    20,818.97/31,249.57 = 18,462.18/x
  3. Step 3: Cross multiply
    20,818.97x = 31,249.57 × 18,462.18
  4. Step 4: Simplify right side
    20,818.97x = 576,934,983.86
  5. Step 5: Solve for x
    x = 576,934,983.86/20,818.97
  6. Step 6: Final answer
    x = 27,711.98

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1.5x scale

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.