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Finding the Third Proportional to 9,129 and 18,609

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Solution

The third proportional to 9,129 and 18,609 is: 37,933.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129 : 18,609 = 18,609 : x
  2. Step 2: Convert to fraction form
    9,129/18,609 = 18,609/x
  3. Step 3: Cross multiply
    9,129x = 18,609 × 18,609
  4. Step 4: Simplify right side
    9,129x = 346,294,881
  5. Step 5: Solve for x
    x = 346,294,881/9,129
  6. Step 6: Final answer
    x = 37,933.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.