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Finding the Third Proportional to 11,928 and 19,284

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Solution

The third proportional to 11,928 and 19,284 is: 31,176.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928 : 19,284 = 19,284 : x
  2. Step 2: Convert to fraction form
    11,928/19,284 = 19,284/x
  3. Step 3: Cross multiply
    11,928x = 19,284 × 19,284
  4. Step 4: Simplify right side
    11,928x = 371,872,656
  5. Step 5: Solve for x
    x = 371,872,656/11,928
  6. Step 6: Final answer
    x = 31,176.45

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.