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Finding the Third Proportional to 15,442 and 21,268

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Solution

The third proportional to 15,442 and 21,268 is: 29,292.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442 : 21,268 = 21,268 : x
  2. Step 2: Convert to fraction form
    15,442/21,268 = 21,268/x
  3. Step 3: Cross multiply
    15,442x = 21,268 × 21,268
  4. Step 4: Simplify right side
    15,442x = 452,327,824
  5. Step 5: Solve for x
    x = 452,327,824/15,442
  6. Step 6: Final answer
    x = 29,292.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.