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Finding the Third Proportional to 11,904 and 19,080

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Solution

The third proportional to 11,904 and 19,080 is: 30,581.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,904 : 19,080 = 19,080 : x
  2. Step 2: Convert to fraction form
    11,904/19,080 = 19,080/x
  3. Step 3: Cross multiply
    11,904x = 19,080 × 19,080
  4. Step 4: Simplify right side
    11,904x = 364,046,400
  5. Step 5: Solve for x
    x = 364,046,400/11,904
  6. Step 6: Final answer
    x = 30,581.85

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.