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Finding the Third Proportional to 9,115.50 and 19,626.75

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Solution

The third proportional to 9,115.50 and 19,626.75 is: 42,258.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.50 : 19,626.75 = 19,626.75 : x
  2. Step 2: Convert to fraction form
    9,115.50/19,626.75 = 19,626.75/x
  3. Step 3: Cross multiply
    9,115.50x = 19,626.75 × 19,626.75
  4. Step 4: Simplify right side
    9,115.50x = 385,209,315.56
  5. Step 5: Solve for x
    x = 385,209,315.56/9,115.50
  6. Step 6: Final answer
    x = 42,258.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.