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Finding the Third Proportional to 18,087 and 28,289

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Solution

The third proportional to 18,087 and 28,289 is: 44,245.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087 : 28,289 = 28,289 : x
  2. Step 2: Convert to fraction form
    18,087/28,289 = 28,289/x
  3. Step 3: Cross multiply
    18,087x = 28,289 × 28,289
  4. Step 4: Simplify right side
    18,087x = 800,267,521
  5. Step 5: Solve for x
    x = 800,267,521/18,087
  6. Step 6: Final answer
    x = 44,245.45

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.