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Finding the Third Proportional to 11,900 and 18,622

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Solution

The third proportional to 11,900 and 18,622 is: 29,141.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,900 : 18,622 = 18,622 : x
  2. Step 2: Convert to fraction form
    11,900/18,622 = 18,622/x
  3. Step 3: Cross multiply
    11,900x = 18,622 × 18,622
  4. Step 4: Simplify right side
    11,900x = 346,778,884
  5. Step 5: Solve for x
    x = 346,778,884/11,900
  6. Step 6: Final answer
    x = 29,141.08

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.