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Finding the Third Proportional to 12,708 and 27,879

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Solution

The third proportional to 12,708 and 27,879 is: 61,161.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,708 : 27,879 = 27,879 : x
  2. Step 2: Convert to fraction form
    12,708/27,879 = 27,879/x
  3. Step 3: Cross multiply
    12,708x = 27,879 × 27,879
  4. Step 4: Simplify right side
    12,708x = 777,238,641
  5. Step 5: Solve for x
    x = 777,238,641/12,708
  6. Step 6: Final answer
    x = 61,161.37

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.