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Finding the Third Proportional to 13,680 and 27,860

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Solution

The third proportional to 13,680 and 27,860 is: 56,738.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680 : 27,860 = 27,860 : x
  2. Step 2: Convert to fraction form
    13,680/27,860 = 27,860/x
  3. Step 3: Cross multiply
    13,680x = 27,860 × 27,860
  4. Step 4: Simplify right side
    13,680x = 776,179,600
  5. Step 5: Solve for x
    x = 776,179,600/13,680
  6. Step 6: Final answer
    x = 56,738.27

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.