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Finding the Third Proportional to 21,708 and 28,674

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Solution

The third proportional to 21,708 and 28,674 is: 37,875.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708 : 28,674 = 28,674 : x
  2. Step 2: Convert to fraction form
    21,708/28,674 = 28,674/x
  3. Step 3: Cross multiply
    21,708x = 28,674 × 28,674
  4. Step 4: Simplify right side
    21,708x = 822,198,276
  5. Step 5: Solve for x
    x = 822,198,276/21,708
  6. Step 6: Final answer
    x = 37,875.36

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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.