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Finding the Third Proportional to 18,105.75 and 21,048.75

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Solution

The third proportional to 18,105.75 and 21,048.75 is: 24,470.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.75 : 21,048.75 = 21,048.75 : x
  2. Step 2: Convert to fraction form
    18,105.75/21,048.75 = 21,048.75/x
  3. Step 3: Cross multiply
    18,105.75x = 21,048.75 × 21,048.75
  4. Step 4: Simplify right side
    18,105.75x = 443,049,876.56
  5. Step 5: Solve for x
    x = 443,049,876.56/18,105.75
  6. Step 6: Final answer
    x = 24,470.12

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.