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Finding the Third Proportional to 21,600 and 28,713

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Solution

The third proportional to 21,600 and 28,713 is: 38,168.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,600 : 28,713 = 28,713 : x
  2. Step 2: Convert to fraction form
    21,600/28,713 = 28,713/x
  3. Step 3: Cross multiply
    21,600x = 28,713 × 28,713
  4. Step 4: Simplify right side
    21,600x = 824,436,369
  5. Step 5: Solve for x
    x = 824,436,369/21,600
  6. Step 6: Final answer
    x = 38,168.35

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.