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Finding the Third Proportional to 7,620 and 17,376

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Solution

The third proportional to 7,620 and 17,376 is: 39,622.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620 : 17,376 = 17,376 : x
  2. Step 2: Convert to fraction form
    7,620/17,376 = 17,376/x
  3. Step 3: Cross multiply
    7,620x = 17,376 × 17,376
  4. Step 4: Simplify right side
    7,620x = 301,925,376
  5. Step 5: Solve for x
    x = 301,925,376/7,620
  6. Step 6: Final answer
    x = 39,622.75

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Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.