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Finding the Third Proportional to 18,115 and 27,847.50

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Solution

The third proportional to 18,115 and 27,847.50 is: 42,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115 : 27,847.50 = 27,847.50 : x
  2. Step 2: Convert to fraction form
    18,115/27,847.50 = 27,847.50/x
  3. Step 3: Cross multiply
    18,115x = 27,847.50 × 27,847.50
  4. Step 4: Simplify right side
    18,115x = 775,483,256.25
  5. Step 5: Solve for x
    x = 775,483,256.25/18,115
  6. Step 6: Final answer
    x = 42,808.90

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.