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Finding the Third Proportional to 9,439 and 20,173

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Solution

The third proportional to 9,439 and 20,173 is: 43,113.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,439 : 20,173 = 20,173 : x
  2. Step 2: Convert to fraction form
    9,439/20,173 = 20,173/x
  3. Step 3: Cross multiply
    9,439x = 20,173 × 20,173
  4. Step 4: Simplify right side
    9,439x = 406,949,929
  5. Step 5: Solve for x
    x = 406,949,929/9,439
  6. Step 6: Final answer
    x = 43,113.67

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.