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Finding the Fourth Proportional to 12,371.92, 18,552.81 and 6,129.65

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Solution

The fourth proportional to 12,371.92, 18,552.81 and 6,129.65 is: 9,191.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,371.92 : 18,552.81 = 6,129.65 : x
  2. Step 2: Convert to fraction form
    12,371.92/18,552.81 = 6,129.65/x
  3. Step 3: Cross multiply
    12,371.92x = 18,552.81 × 6,129.65
  4. Step 4: Simplify right side
    12,371.92x = 113,722,231.82
  5. Step 5: Solve for x
    x = 113,722,231.82/12,371.92
  6. Step 6: Final answer
    x = 9,191.96

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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.