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Finding the Third Proportional to 18,069.75 and 20,580.75

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Solution

The third proportional to 18,069.75 and 20,580.75 is: 23,440.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,069.75 : 20,580.75 = 20,580.75 : x
  2. Step 2: Convert to fraction form
    18,069.75/20,580.75 = 20,580.75/x
  3. Step 3: Cross multiply
    18,069.75x = 20,580.75 × 20,580.75
  4. Step 4: Simplify right side
    18,069.75x = 423,567,270.56
  5. Step 5: Solve for x
    x = 423,567,270.56/18,069.75
  6. Step 6: Final answer
    x = 23,440.68

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.