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Finding the Third Proportional to 9,609 and 20,859

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Solution

The third proportional to 9,609 and 20,859 is: 45,280.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,609 : 20,859 = 20,859 : x
  2. Step 2: Convert to fraction form
    9,609/20,859 = 20,859/x
  3. Step 3: Cross multiply
    9,609x = 20,859 × 20,859
  4. Step 4: Simplify right side
    9,609x = 435,097,881
  5. Step 5: Solve for x
    x = 435,097,881/9,609
  6. Step 6: Final answer
    x = 45,280.25

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.