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Finding the Third Proportional to 8,647 and 18,446

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Solution

The third proportional to 8,647 and 18,446 is: 39,349.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647 : 18,446 = 18,446 : x
  2. Step 2: Convert to fraction form
    8,647/18,446 = 18,446/x
  3. Step 3: Cross multiply
    8,647x = 18,446 × 18,446
  4. Step 4: Simplify right side
    8,647x = 340,254,916
  5. Step 5: Solve for x
    x = 340,254,916/8,647
  6. Step 6: Final answer
    x = 39,349.48

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.