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Finding the Fourth Proportional to 12,717.92, 17,551.42 and 7,412.42

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Solution

The fourth proportional to 12,717.92, 17,551.42 and 7,412.42 is: 10,229.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,717.92 : 17,551.42 = 7,412.42 : x
  2. Step 2: Convert to fraction form
    12,717.92/17,551.42 = 7,412.42/x
  3. Step 3: Cross multiply
    12,717.92x = 17,551.42 × 7,412.42
  4. Step 4: Simplify right side
    12,717.92x = 130,098,496.64
  5. Step 5: Solve for x
    x = 130,098,496.64/12,717.92
  6. Step 6: Final answer
    x = 10,229.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.