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Finding the Third Proportional to 11,890 and 19,104

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Solution

The third proportional to 11,890 and 19,104 is: 30,694.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890 : 19,104 = 19,104 : x
  2. Step 2: Convert to fraction form
    11,890/19,104 = 19,104/x
  3. Step 3: Cross multiply
    11,890x = 19,104 × 19,104
  4. Step 4: Simplify right side
    11,890x = 364,962,816
  5. Step 5: Solve for x
    x = 364,962,816/11,890
  6. Step 6: Final answer
    x = 30,694.94

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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.