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Finding the Third Proportional to 20,694 and 28,564.50

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Solution

The third proportional to 20,694 and 28,564.50 is: 39,428.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694 : 28,564.50 = 28,564.50 : x
  2. Step 2: Convert to fraction form
    20,694/28,564.50 = 28,564.50/x
  3. Step 3: Cross multiply
    20,694x = 28,564.50 × 28,564.50
  4. Step 4: Simplify right side
    20,694x = 815,930,660.25
  5. Step 5: Solve for x
    x = 815,930,660.25/20,694
  6. Step 6: Final answer
    x = 39,428.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.