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Finding the Fourth Proportional to 12,480.80, 18,723.02 and 4,474.96

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Solution

The fourth proportional to 12,480.80, 18,723.02 and 4,474.96 is: 6,713.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.80 : 18,723.02 = 4,474.96 : x
  2. Step 2: Convert to fraction form
    12,480.80/18,723.02 = 4,474.96/x
  3. Step 3: Cross multiply
    12,480.80x = 18,723.02 × 4,474.96
  4. Step 4: Simplify right side
    12,480.80x = 83,784,765.58
  5. Step 5: Solve for x
    x = 83,784,765.58/12,480.80
  6. Step 6: Final answer
    x = 6,713.09

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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.