Home / 31,311.80-43,209.39-17,882.78

Finding the Fourth Proportional to 31,311.80, 43,209.39 and 17,882.78

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Solution

The fourth proportional to 31,311.80, 43,209.39 and 17,882.78 is: 24,677.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,311.80 : 43,209.39 = 17,882.78 : x
  2. Step 2: Convert to fraction form
    31,311.80/43,209.39 = 17,882.78/x
  3. Step 3: Cross multiply
    31,311.80x = 43,209.39 × 17,882.78
  4. Step 4: Simplify right side
    31,311.80x = 772,704,028.35
  5. Step 5: Solve for x
    x = 772,704,028.35/31,311.80
  6. Step 6: Final answer
    x = 24,677.72

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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.