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Finding the Third Proportional to 17,560 and 19,480

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Solution

The third proportional to 17,560 and 19,480 is: 21,609.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,560 : 19,480 = 19,480 : x
  2. Step 2: Convert to fraction form
    17,560/19,480 = 19,480/x
  3. Step 3: Cross multiply
    17,560x = 19,480 × 19,480
  4. Step 4: Simplify right side
    17,560x = 379,470,400
  5. Step 5: Solve for x
    x = 379,470,400/17,560
  6. Step 6: Final answer
    x = 21,609.93

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.