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Finding the Third Proportional to 9,211.50 and 19,212.75

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Solution

The third proportional to 9,211.50 and 19,212.75 is: 40,072.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,211.50 : 19,212.75 = 19,212.75 : x
  2. Step 2: Convert to fraction form
    9,211.50/19,212.75 = 19,212.75/x
  3. Step 3: Cross multiply
    9,211.50x = 19,212.75 × 19,212.75
  4. Step 4: Simplify right side
    9,211.50x = 369,129,762.56
  5. Step 5: Solve for x
    x = 369,129,762.56/9,211.50
  6. Step 6: Final answer
    x = 40,072.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.