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Finding the Third Proportional to 11,072 and 17,121

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Solution

The third proportional to 11,072 and 17,121 is: 26,474.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,072 : 17,121 = 17,121 : x
  2. Step 2: Convert to fraction form
    11,072/17,121 = 17,121/x
  3. Step 3: Cross multiply
    11,072x = 17,121 × 17,121
  4. Step 4: Simplify right side
    11,072x = 293,128,641
  5. Step 5: Solve for x
    x = 293,128,641/11,072
  6. Step 6: Final answer
    x = 26,474.77

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.