Home / 12,769.38-19,129.10-8,373.42

Finding the Fourth Proportional to 12,769.38, 19,129.10 and 8,373.42

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Solution

The fourth proportional to 12,769.38, 19,129.10 and 8,373.42 is: 12,543.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,769.38 : 19,129.10 = 8,373.42 : x
  2. Step 2: Convert to fraction form
    12,769.38/19,129.10 = 8,373.42/x
  3. Step 3: Cross multiply
    12,769.38x = 19,129.10 × 8,373.42
  4. Step 4: Simplify right side
    12,769.38x = 160,175,988.52
  5. Step 5: Solve for x
    x = 160,175,988.52/12,769.38
  6. Step 6: Final answer
    x = 12,543.76

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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.