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Finding the Third Proportional to 15,828 and 34,320

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Solution

The third proportional to 15,828 and 34,320 is: 74,416.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,828 : 34,320 = 34,320 : x
  2. Step 2: Convert to fraction form
    15,828/34,320 = 34,320/x
  3. Step 3: Cross multiply
    15,828x = 34,320 × 34,320
  4. Step 4: Simplify right side
    15,828x = 1,177,862,400
  5. Step 5: Solve for x
    x = 1,177,862,400/15,828
  6. Step 6: Final answer
    x = 74,416.38

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.