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Finding the Third Proportional to 21,984 and 32,728

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Solution

The third proportional to 21,984 and 32,728 is: 48,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984 : 32,728 = 32,728 : x
  2. Step 2: Convert to fraction form
    21,984/32,728 = 32,728/x
  3. Step 3: Cross multiply
    21,984x = 32,728 × 32,728
  4. Step 4: Simplify right side
    21,984x = 1,071,121,984
  5. Step 5: Solve for x
    x = 1,071,121,984/21,984
  6. Step 6: Final answer
    x = 48,722.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.