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Finding the Third Proportional to 11,912 and 19,188

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Solution

The third proportional to 11,912 and 19,188 is: 30,908.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912 : 19,188 = 19,188 : x
  2. Step 2: Convert to fraction form
    11,912/19,188 = 19,188/x
  3. Step 3: Cross multiply
    11,912x = 19,188 × 19,188
  4. Step 4: Simplify right side
    11,912x = 368,179,344
  5. Step 5: Solve for x
    x = 368,179,344/11,912
  6. Step 6: Final answer
    x = 30,908.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.