Home / 20,932.11-28,878.12-11,974.82

Finding the Fourth Proportional to 20,932.11, 28,878.12 and 11,974.82

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Solution

The fourth proportional to 20,932.11, 28,878.12 and 11,974.82 is: 16,520.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.11 : 28,878.12 = 11,974.82 : x
  2. Step 2: Convert to fraction form
    20,932.11/28,878.12 = 11,974.82/x
  3. Step 3: Cross multiply
    20,932.11x = 28,878.12 × 11,974.82
  4. Step 4: Simplify right side
    20,932.11x = 345,810,144.55
  5. Step 5: Solve for x
    x = 345,810,144.55/20,932.11
  6. Step 6: Final answer
    x = 16,520.56

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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.