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Finding the Third Proportional to 21,495 and 33,215

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Solution

The third proportional to 21,495 and 33,215 is: 51,325.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,495 : 33,215 = 33,215 : x
  2. Step 2: Convert to fraction form
    21,495/33,215 = 33,215/x
  3. Step 3: Cross multiply
    21,495x = 33,215 × 33,215
  4. Step 4: Simplify right side
    21,495x = 1,103,236,225
  5. Step 5: Solve for x
    x = 1,103,236,225/21,495
  6. Step 6: Final answer
    x = 51,325.25

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.