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Finding the Third Proportional to 13,128 and 17,268

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Solution

The third proportional to 13,128 and 17,268 is: 22,713.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128 : 17,268 = 17,268 : x
  2. Step 2: Convert to fraction form
    13,128/17,268 = 17,268/x
  3. Step 3: Cross multiply
    13,128x = 17,268 × 17,268
  4. Step 4: Simplify right side
    13,128x = 298,183,824
  5. Step 5: Solve for x
    x = 298,183,824/13,128
  6. Step 6: Final answer
    x = 22,713.58

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.