Home / 12,182.62-16,815.12-8,149.90

Finding the Fourth Proportional to 12,182.62, 16,815.12 and 8,149.90

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Solution

The fourth proportional to 12,182.62, 16,815.12 and 8,149.90 is: 11,248.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,182.62 : 16,815.12 = 8,149.90 : x
  2. Step 2: Convert to fraction form
    12,182.62/16,815.12 = 8,149.90/x
  3. Step 3: Cross multiply
    12,182.62x = 16,815.12 × 8,149.90
  4. Step 4: Simplify right side
    12,182.62x = 137,041,546.49
  5. Step 5: Solve for x
    x = 137,041,546.49/12,182.62
  6. Step 6: Final answer
    x = 11,248.94

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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.