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Finding the Third Proportional to 20,647.13 and 28,729.13

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Solution

The third proportional to 20,647.13 and 28,729.13 is: 39,974.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.13 : 28,729.13 = 28,729.13 : x
  2. Step 2: Convert to fraction form
    20,647.13/28,729.13 = 28,729.13/x
  3. Step 3: Cross multiply
    20,647.13x = 28,729.13 × 28,729.13
  4. Step 4: Simplify right side
    20,647.13x = 825,362,623.27
  5. Step 5: Solve for x
    x = 825,362,623.27/20,647.13
  6. Step 6: Final answer
    x = 39,974.70

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.