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Finding the Third Proportional to 15,920 and 34,190

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Solution

The third proportional to 15,920 and 34,190 is: 73,426.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920 : 34,190 = 34,190 : x
  2. Step 2: Convert to fraction form
    15,920/34,190 = 34,190/x
  3. Step 3: Cross multiply
    15,920x = 34,190 × 34,190
  4. Step 4: Simplify right side
    15,920x = 1,168,956,100
  5. Step 5: Solve for x
    x = 1,168,956,100/15,920
  6. Step 6: Final answer
    x = 73,426.89

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.