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Finding the Third Proportional to 21,340 and 28,548

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Solution

The third proportional to 21,340 and 28,548 is: 38,190.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340 : 28,548 = 28,548 : x
  2. Step 2: Convert to fraction form
    21,340/28,548 = 28,548/x
  3. Step 3: Cross multiply
    21,340x = 28,548 × 28,548
  4. Step 4: Simplify right side
    21,340x = 814,988,304
  5. Step 5: Solve for x
    x = 814,988,304/21,340
  6. Step 6: Final answer
    x = 38,190.64

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.