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Finding the Third Proportional to 20,215 and 41,432

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Solution

The third proportional to 20,215 and 41,432 is: 84,917.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215 : 41,432 = 41,432 : x
  2. Step 2: Convert to fraction form
    20,215/41,432 = 41,432/x
  3. Step 3: Cross multiply
    20,215x = 41,432 × 41,432
  4. Step 4: Simplify right side
    20,215x = 1,716,610,624
  5. Step 5: Solve for x
    x = 1,716,610,624/20,215
  6. Step 6: Final answer
    x = 84,917.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.