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Finding the Third Proportional to 21,996 and 29,511

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Solution

The third proportional to 21,996 and 29,511 is: 39,593.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,996 : 29,511 = 29,511 : x
  2. Step 2: Convert to fraction form
    21,996/29,511 = 29,511/x
  3. Step 3: Cross multiply
    21,996x = 29,511 × 29,511
  4. Step 4: Simplify right side
    21,996x = 870,899,121
  5. Step 5: Solve for x
    x = 870,899,121/21,996
  6. Step 6: Final answer
    x = 39,593.52

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.