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Finding the Third Proportional to 18,121.50 and 25,518.75

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Solution

The third proportional to 18,121.50 and 25,518.75 is: 35,935.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.50 : 25,518.75 = 25,518.75 : x
  2. Step 2: Convert to fraction form
    18,121.50/25,518.75 = 25,518.75/x
  3. Step 3: Cross multiply
    18,121.50x = 25,518.75 × 25,518.75
  4. Step 4: Simplify right side
    18,121.50x = 651,206,601.56
  5. Step 5: Solve for x
    x = 651,206,601.56/18,121.50
  6. Step 6: Final answer
    x = 35,935.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.