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Finding the Third Proportional to 12.86 and 27.96

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Solution

The third proportional to 12.86 and 27.96 is: 60.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.86 : 27.96 = 27.96 : x
  2. Step 2: Convert to fraction form
    12.86/27.96 = 27.96/x
  3. Step 3: Cross multiply
    12.86x = 27.96 × 27.96
  4. Step 4: Simplify right side
    12.86x = 781.83
  5. Step 5: Solve for x
    x = 781.83/12.86
  6. Step 6: Final answer
    x = 60.82

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.