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Finding the Fourth Proportional to 12,180.85, 16,809.62 and 6,591.85

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Solution

The fourth proportional to 12,180.85, 16,809.62 and 6,591.85 is: 9,096.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.85 : 16,809.62 = 6,591.85 : x
  2. Step 2: Convert to fraction form
    12,180.85/16,809.62 = 6,591.85/x
  3. Step 3: Cross multiply
    12,180.85x = 16,809.62 × 6,591.85
  4. Step 4: Simplify right side
    12,180.85x = 110,806,493.60
  5. Step 5: Solve for x
    x = 110,806,493.60/12,180.85
  6. Step 6: Final answer
    x = 9,096.78

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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.