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Finding the Third Proportional to 12,636 and 20,115

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Solution

The third proportional to 12,636 and 20,115 is: 32,020.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636 : 20,115 = 20,115 : x
  2. Step 2: Convert to fraction form
    12,636/20,115 = 20,115/x
  3. Step 3: Cross multiply
    12,636x = 20,115 × 20,115
  4. Step 4: Simplify right side
    12,636x = 404,613,225
  5. Step 5: Solve for x
    x = 404,613,225/12,636
  6. Step 6: Final answer
    x = 32,020.67

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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.