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Finding the Third Proportional to 7,728.75 and 16,885.13

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Solution

The third proportional to 7,728.75 and 16,885.13 is: 36,889.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.75 : 16,885.13 = 16,885.13 : x
  2. Step 2: Convert to fraction form
    7,728.75/16,885.13 = 16,885.13/x
  3. Step 3: Cross multiply
    7,728.75x = 16,885.13 × 16,885.13
  4. Step 4: Simplify right side
    7,728.75x = 285,107,446.27
  5. Step 5: Solve for x
    x = 285,107,446.27/7,728.75
  6. Step 6: Final answer
    x = 36,889.21

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.