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Finding the Fourth Proportional to 12,195.80, 18,282.90 and 8,037.80

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Solution

The fourth proportional to 12,195.80, 18,282.90 and 8,037.80 is: 12,049.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.80 : 18,282.90 = 8,037.80 : x
  2. Step 2: Convert to fraction form
    12,195.80/18,282.90 = 8,037.80/x
  3. Step 3: Cross multiply
    12,195.80x = 18,282.90 × 8,037.80
  4. Step 4: Simplify right side
    12,195.80x = 146,954,293.62
  5. Step 5: Solve for x
    x = 146,954,293.62/12,195.80
  6. Step 6: Final answer
    x = 12,049.58

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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.