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Finding the Third Proportional to 20,819 and 27,412

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Solution

The third proportional to 20,819 and 27,412 is: 36,092.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819 : 27,412 = 27,412 : x
  2. Step 2: Convert to fraction form
    20,819/27,412 = 27,412/x
  3. Step 3: Cross multiply
    20,819x = 27,412 × 27,412
  4. Step 4: Simplify right side
    20,819x = 751,417,744
  5. Step 5: Solve for x
    x = 751,417,744/20,819
  6. Step 6: Final answer
    x = 36,092.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.