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Finding the Third Proportional to 12,480.75 and 26,716.50

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Solution

The third proportional to 12,480.75 and 26,716.50 is: 57,189.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.75 : 26,716.50 = 26,716.50 : x
  2. Step 2: Convert to fraction form
    12,480.75/26,716.50 = 26,716.50/x
  3. Step 3: Cross multiply
    12,480.75x = 26,716.50 × 26,716.50
  4. Step 4: Simplify right side
    12,480.75x = 713,771,372.25
  5. Step 5: Solve for x
    x = 713,771,372.25/12,480.75
  6. Step 6: Final answer
    x = 57,189.78

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.