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Finding the Third Proportional to 9,270 and 19,859

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Solution

The third proportional to 9,270 and 19,859 is: 42,543.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,270 : 19,859 = 19,859 : x
  2. Step 2: Convert to fraction form
    9,270/19,859 = 19,859/x
  3. Step 3: Cross multiply
    9,270x = 19,859 × 19,859
  4. Step 4: Simplify right side
    9,270x = 394,379,881
  5. Step 5: Solve for x
    x = 394,379,881/9,270
  6. Step 6: Final answer
    x = 42,543.68

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.