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Finding the Third Proportional to 6,387 and 13,419

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Solution

The third proportional to 6,387 and 13,419 is: 28,193.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387 : 13,419 = 13,419 : x
  2. Step 2: Convert to fraction form
    6,387/13,419 = 13,419/x
  3. Step 3: Cross multiply
    6,387x = 13,419 × 13,419
  4. Step 4: Simplify right side
    6,387x = 180,069,561
  5. Step 5: Solve for x
    x = 180,069,561/6,387
  6. Step 6: Final answer
    x = 28,193.14

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.