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Finding the Third Proportional to 7,647.75 and 11,809.13

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Solution

The third proportional to 7,647.75 and 11,809.13 is: 18,234.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,647.75 : 11,809.13 = 11,809.13 : x
  2. Step 2: Convert to fraction form
    7,647.75/11,809.13 = 11,809.13/x
  3. Step 3: Cross multiply
    7,647.75x = 11,809.13 × 11,809.13
  4. Step 4: Simplify right side
    7,647.75x = 139,455,433.27
  5. Step 5: Solve for x
    x = 139,455,433.27/7,647.75
  6. Step 6: Final answer
    x = 18,234.83

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.