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Finding the Third Proportional to 18,990 and 30,183

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Solution

The third proportional to 18,990 and 30,183 is: 47,973.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990 : 30,183 = 30,183 : x
  2. Step 2: Convert to fraction form
    18,990/30,183 = 30,183/x
  3. Step 3: Cross multiply
    18,990x = 30,183 × 30,183
  4. Step 4: Simplify right side
    18,990x = 911,013,489
  5. Step 5: Solve for x
    x = 911,013,489/18,990
  6. Step 6: Final answer
    x = 47,973.33

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1.5x scale

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.