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Finding the Third Proportional to 7,647 and 11,818.13

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Solution

The third proportional to 7,647 and 11,818.13 is: 18,264.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,647 : 11,818.13 = 11,818.13 : x
  2. Step 2: Convert to fraction form
    7,647/11,818.13 = 11,818.13/x
  3. Step 3: Cross multiply
    7,647x = 11,818.13 × 11,818.13
  4. Step 4: Simplify right side
    7,647x = 139,668,078.52
  5. Step 5: Solve for x
    x = 139,668,078.52/7,647
  6. Step 6: Final answer
    x = 18,264.43

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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.