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Finding the Third Proportional to 7,546 and 11,821

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Solution

The third proportional to 7,546 and 11,821 is: 18,517.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,546 : 11,821 = 11,821 : x
  2. Step 2: Convert to fraction form
    7,546/11,821 = 11,821/x
  3. Step 3: Cross multiply
    7,546x = 11,821 × 11,821
  4. Step 4: Simplify right side
    7,546x = 139,736,041
  5. Step 5: Solve for x
    x = 139,736,041/7,546
  6. Step 6: Final answer
    x = 18,517.90

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.