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Finding the Third Proportional to 13,638 and 19,308

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Solution

The third proportional to 13,638 and 19,308 is: 27,335.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638 : 19,308 = 19,308 : x
  2. Step 2: Convert to fraction form
    13,638/19,308 = 19,308/x
  3. Step 3: Cross multiply
    13,638x = 19,308 × 19,308
  4. Step 4: Simplify right side
    13,638x = 372,798,864
  5. Step 5: Solve for x
    x = 372,798,864/13,638
  6. Step 6: Final answer
    x = 27,335.30

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.