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Finding the Third Proportional to 10,720 and 17,058

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Solution

The third proportional to 10,720 and 17,058 is: 27,143.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720 : 17,058 = 17,058 : x
  2. Step 2: Convert to fraction form
    10,720/17,058 = 17,058/x
  3. Step 3: Cross multiply
    10,720x = 17,058 × 17,058
  4. Step 4: Simplify right side
    10,720x = 290,975,364
  5. Step 5: Solve for x
    x = 290,975,364/10,720
  6. Step 6: Final answer
    x = 27,143.22

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.