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Finding the Third Proportional to 18,504 and 30,210

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Solution

The third proportional to 18,504 and 30,210 is: 49,321.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,504 : 30,210 = 30,210 : x
  2. Step 2: Convert to fraction form
    18,504/30,210 = 30,210/x
  3. Step 3: Cross multiply
    18,504x = 30,210 × 30,210
  4. Step 4: Simplify right side
    18,504x = 912,644,100
  5. Step 5: Solve for x
    x = 912,644,100/18,504
  6. Step 6: Final answer
    x = 49,321.45

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.