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Finding the Third Proportional to 10,639 and 16,839

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Solution

The third proportional to 10,639 and 16,839 is: 26,652.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639 : 16,839 = 16,839 : x
  2. Step 2: Convert to fraction form
    10,639/16,839 = 16,839/x
  3. Step 3: Cross multiply
    10,639x = 16,839 × 16,839
  4. Step 4: Simplify right side
    10,639x = 283,551,921
  5. Step 5: Solve for x
    x = 283,551,921/10,639
  6. Step 6: Final answer
    x = 26,652.12

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.