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Finding the Third Proportional to 12,682 and 19,742

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Solution

The third proportional to 12,682 and 19,742 is: 30,732.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,682 : 19,742 = 19,742 : x
  2. Step 2: Convert to fraction form
    12,682/19,742 = 19,742/x
  3. Step 3: Cross multiply
    12,682x = 19,742 × 19,742
  4. Step 4: Simplify right side
    12,682x = 389,746,564
  5. Step 5: Solve for x
    x = 389,746,564/12,682
  6. Step 6: Final answer
    x = 30,732.26

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.