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Finding the Third Proportional to 8,928 and 13,976

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Solution

The third proportional to 8,928 and 13,976 is: 21,878.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928 : 13,976 = 13,976 : x
  2. Step 2: Convert to fraction form
    8,928/13,976 = 13,976/x
  3. Step 3: Cross multiply
    8,928x = 13,976 × 13,976
  4. Step 4: Simplify right side
    8,928x = 195,328,576
  5. Step 5: Solve for x
    x = 195,328,576/8,928
  6. Step 6: Final answer
    x = 21,878.20

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.