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Finding the Third Proportional to 21,511 and 33,225

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Solution

The third proportional to 21,511 and 33,225 is: 51,317.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,511 : 33,225 = 33,225 : x
  2. Step 2: Convert to fraction form
    21,511/33,225 = 33,225/x
  3. Step 3: Cross multiply
    21,511x = 33,225 × 33,225
  4. Step 4: Simplify right side
    21,511x = 1,103,900,625
  5. Step 5: Solve for x
    x = 1,103,900,625/21,511
  6. Step 6: Final answer
    x = 51,317.96

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.