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Finding the Third Proportional to 18,420 and 29,302

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Solution

The third proportional to 18,420 and 29,302 is: 46,612.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420 : 29,302 = 29,302 : x
  2. Step 2: Convert to fraction form
    18,420/29,302 = 29,302/x
  3. Step 3: Cross multiply
    18,420x = 29,302 × 29,302
  4. Step 4: Simplify right side
    18,420x = 858,607,204
  5. Step 5: Solve for x
    x = 858,607,204/18,420
  6. Step 6: Final answer
    x = 46,612.77

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.