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Finding the Third Proportional to 12,479 and 26,786

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Solution

The third proportional to 12,479 and 26,786 is: 57,495.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479 : 26,786 = 26,786 : x
  2. Step 2: Convert to fraction form
    12,479/26,786 = 26,786/x
  3. Step 3: Cross multiply
    12,479x = 26,786 × 26,786
  4. Step 4: Simplify right side
    12,479x = 717,489,796
  5. Step 5: Solve for x
    x = 717,489,796/12,479
  6. Step 6: Final answer
    x = 57,495.78

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.