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Finding the Third Proportional to 18,143.50 and 27,488.75

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Solution

The third proportional to 18,143.50 and 27,488.75 is: 41,647.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.50 : 27,488.75 = 27,488.75 : x
  2. Step 2: Convert to fraction form
    18,143.50/27,488.75 = 27,488.75/x
  3. Step 3: Cross multiply
    18,143.50x = 27,488.75 × 27,488.75
  4. Step 4: Simplify right side
    18,143.50x = 755,631,376.56
  5. Step 5: Solve for x
    x = 755,631,376.56/18,143.50
  6. Step 6: Final answer
    x = 41,647.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.