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Finding the Third Proportional to 19,530 and 21,348

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Solution

The third proportional to 19,530 and 21,348 is: 23,335.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,530 : 21,348 = 21,348 : x
  2. Step 2: Convert to fraction form
    19,530/21,348 = 21,348/x
  3. Step 3: Cross multiply
    19,530x = 21,348 × 21,348
  4. Step 4: Simplify right side
    19,530x = 455,737,104
  5. Step 5: Solve for x
    x = 455,737,104/19,530
  6. Step 6: Final answer
    x = 23,335.23

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.