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Finding the Third Proportional to 21,421.38 and 34,207.75

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Solution

The third proportional to 21,421.38 and 34,207.75 is: 54,626.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.38 : 34,207.75 = 34,207.75 : x
  2. Step 2: Convert to fraction form
    21,421.38/34,207.75 = 34,207.75/x
  3. Step 3: Cross multiply
    21,421.38x = 34,207.75 × 34,207.75
  4. Step 4: Simplify right side
    21,421.38x = 1,170,170,160.06
  5. Step 5: Solve for x
    x = 1,170,170,160.06/21,421.38
  6. Step 6: Final answer
    x = 54,626.29

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.