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Finding the Third Proportional to 20,962.50 and 27,979.50

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Solution

The third proportional to 20,962.50 and 27,979.50 is: 37,345.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.50 : 27,979.50 = 27,979.50 : x
  2. Step 2: Convert to fraction form
    20,962.50/27,979.50 = 27,979.50/x
  3. Step 3: Cross multiply
    20,962.50x = 27,979.50 × 27,979.50
  4. Step 4: Simplify right side
    20,962.50x = 782,852,420.25
  5. Step 5: Solve for x
    x = 782,852,420.25/20,962.50
  6. Step 6: Final answer
    x = 37,345.37

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.