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Finding the Third Proportional to 13,792 and 19,520

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Solution

The third proportional to 13,792 and 19,520 is: 27,626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,792 : 19,520 = 19,520 : x
  2. Step 2: Convert to fraction form
    13,792/19,520 = 19,520/x
  3. Step 3: Cross multiply
    13,792x = 19,520 × 19,520
  4. Step 4: Simplify right side
    13,792x = 381,030,400
  5. Step 5: Solve for x
    x = 381,030,400/13,792
  6. Step 6: Final answer
    x = 27,626.91

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.