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Finding the Third Proportional to 20,709 and 27,967.50

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Solution

The third proportional to 20,709 and 27,967.50 is: 37,770.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709 : 27,967.50 = 27,967.50 : x
  2. Step 2: Convert to fraction form
    20,709/27,967.50 = 27,967.50/x
  3. Step 3: Cross multiply
    20,709x = 27,967.50 × 27,967.50
  4. Step 4: Simplify right side
    20,709x = 782,181,056.25
  5. Step 5: Solve for x
    x = 782,181,056.25/20,709
  6. Step 6: Final answer
    x = 37,770.10

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.