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Finding the Fourth Proportional to 12,793.73, 19,193.41 and 3,909.80

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Solution

The fourth proportional to 12,793.73, 19,193.41 and 3,909.80 is: 5,865.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,793.73 : 19,193.41 = 3,909.80 : x
  2. Step 2: Convert to fraction form
    12,793.73/19,193.41 = 3,909.80/x
  3. Step 3: Cross multiply
    12,793.73x = 19,193.41 × 3,909.80
  4. Step 4: Simplify right side
    12,793.73x = 75,042,425.30
  5. Step 5: Solve for x
    x = 75,042,425.30/12,793.73
  6. Step 6: Final answer
    x = 5,865.56

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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.