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Finding the Third Proportional to 15,867 and 28,291.50

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Solution

The third proportional to 15,867 and 28,291.50 is: 50,444.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,867 : 28,291.50 = 28,291.50 : x
  2. Step 2: Convert to fraction form
    15,867/28,291.50 = 28,291.50/x
  3. Step 3: Cross multiply
    15,867x = 28,291.50 × 28,291.50
  4. Step 4: Simplify right side
    15,867x = 800,408,972.25
  5. Step 5: Solve for x
    x = 800,408,972.25/15,867
  6. Step 6: Final answer
    x = 50,444.88

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.