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Finding the Third Proportional to 12,347 and 18,629

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Solution

The third proportional to 12,347 and 18,629 is: 28,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347 : 18,629 = 18,629 : x
  2. Step 2: Convert to fraction form
    12,347/18,629 = 18,629/x
  3. Step 3: Cross multiply
    12,347x = 18,629 × 18,629
  4. Step 4: Simplify right side
    12,347x = 347,039,641
  5. Step 5: Solve for x
    x = 347,039,641/12,347
  6. Step 6: Final answer
    x = 28,107.20

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.