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Finding the Fourth Proportional to 12,881.73, 19,290.92 and 6,286.65

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Solution

The fourth proportional to 12,881.73, 19,290.92 and 6,286.65 is: 9,414.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,881.73 : 19,290.92 = 6,286.65 : x
  2. Step 2: Convert to fraction form
    12,881.73/19,290.92 = 6,286.65/x
  3. Step 3: Cross multiply
    12,881.73x = 19,290.92 × 6,286.65
  4. Step 4: Simplify right side
    12,881.73x = 121,275,230.78
  5. Step 5: Solve for x
    x = 121,275,230.78/12,881.73
  6. Step 6: Final answer
    x = 9,414.51

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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.