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Finding the Third Proportional to 18,990 and 25,203

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Solution

The third proportional to 18,990 and 25,203 is: 33,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990 : 25,203 = 25,203 : x
  2. Step 2: Convert to fraction form
    18,990/25,203 = 25,203/x
  3. Step 3: Cross multiply
    18,990x = 25,203 × 25,203
  4. Step 4: Simplify right side
    18,990x = 635,191,209
  5. Step 5: Solve for x
    x = 635,191,209/18,990
  6. Step 6: Final answer
    x = 33,448.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.