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Finding the Third Proportional to 21,690 and 32,717

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Solution

The third proportional to 21,690 and 32,717 is: 49,350.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,690 : 32,717 = 32,717 : x
  2. Step 2: Convert to fraction form
    21,690/32,717 = 32,717/x
  3. Step 3: Cross multiply
    21,690x = 32,717 × 32,717
  4. Step 4: Simplify right side
    21,690x = 1,070,402,089
  5. Step 5: Solve for x
    x = 1,070,402,089/21,690
  6. Step 6: Final answer
    x = 49,350.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.