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Finding the Third Proportional to 8,900 and 20,603

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Solution

The third proportional to 8,900 and 20,603 is: 47,694.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900 : 20,603 = 20,603 : x
  2. Step 2: Convert to fraction form
    8,900/20,603 = 20,603/x
  3. Step 3: Cross multiply
    8,900x = 20,603 × 20,603
  4. Step 4: Simplify right side
    8,900x = 424,483,609
  5. Step 5: Solve for x
    x = 424,483,609/8,900
  6. Step 6: Final answer
    x = 47,694.79

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.