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Finding the Third Proportional to 20,956 and 27,977.50

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Solution

The third proportional to 20,956 and 27,977.50 is: 37,351.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956 : 27,977.50 = 27,977.50 : x
  2. Step 2: Convert to fraction form
    20,956/27,977.50 = 27,977.50/x
  3. Step 3: Cross multiply
    20,956x = 27,977.50 × 27,977.50
  4. Step 4: Simplify right side
    20,956x = 782,740,506.25
  5. Step 5: Solve for x
    x = 782,740,506.25/20,956
  6. Step 6: Final answer
    x = 37,351.62

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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.