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Finding the Third Proportional to 7,706 and 11,955

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Solution

The third proportional to 7,706 and 11,955 is: 18,546.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,706 : 11,955 = 11,955 : x
  2. Step 2: Convert to fraction form
    7,706/11,955 = 11,955/x
  3. Step 3: Cross multiply
    7,706x = 11,955 × 11,955
  4. Step 4: Simplify right side
    7,706x = 142,922,025
  5. Step 5: Solve for x
    x = 142,922,025/7,706
  6. Step 6: Final answer
    x = 18,546.85

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.