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Finding the Fourth Proportional to 12,769.76, 19,170.84 and 12,244.88

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Solution

The fourth proportional to 12,769.76, 19,170.84 and 12,244.88 is: 18,382.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,769.76 : 19,170.84 = 12,244.88 : x
  2. Step 2: Convert to fraction form
    12,769.76/19,170.84 = 12,244.88/x
  3. Step 3: Cross multiply
    12,769.76x = 19,170.84 × 12,244.88
  4. Step 4: Simplify right side
    12,769.76x = 234,744,635.30
  5. Step 5: Solve for x
    x = 234,744,635.30/12,769.76
  6. Step 6: Final answer
    x = 18,382.85

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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.