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Finding the Third Proportional to 6,720 and 15,424

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Solution

The third proportional to 6,720 and 15,424 is: 35,401.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720 : 15,424 = 15,424 : x
  2. Step 2: Convert to fraction form
    6,720/15,424 = 15,424/x
  3. Step 3: Cross multiply
    6,720x = 15,424 × 15,424
  4. Step 4: Simplify right side
    6,720x = 237,899,776
  5. Step 5: Solve for x
    x = 237,899,776/6,720
  6. Step 6: Final answer
    x = 35,401.75

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.