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Finding the Third Proportional to 5,055 and 10,515

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Solution

The third proportional to 5,055 and 10,515 is: 21,872.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,055 : 10,515 = 10,515 : x
  2. Step 2: Convert to fraction form
    5,055/10,515 = 10,515/x
  3. Step 3: Cross multiply
    5,055x = 10,515 × 10,515
  4. Step 4: Simplify right side
    5,055x = 110,565,225
  5. Step 5: Solve for x
    x = 110,565,225/5,055
  6. Step 6: Final answer
    x = 21,872.45

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.