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Finding the Third Proportional to 13,638 and 29,580

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Solution

The third proportional to 13,638 and 29,580 is: 64,157.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638 : 29,580 = 29,580 : x
  2. Step 2: Convert to fraction form
    13,638/29,580 = 29,580/x
  3. Step 3: Cross multiply
    13,638x = 29,580 × 29,580
  4. Step 4: Simplify right side
    13,638x = 874,976,400
  5. Step 5: Solve for x
    x = 874,976,400/13,638
  6. Step 6: Final answer
    x = 64,157.24

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.