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Finding the Third Proportional to 9,400 and 19,430

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Solution

The third proportional to 9,400 and 19,430 is: 40,162.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,400 : 19,430 = 19,430 : x
  2. Step 2: Convert to fraction form
    9,400/19,430 = 19,430/x
  3. Step 3: Cross multiply
    9,400x = 19,430 × 19,430
  4. Step 4: Simplify right side
    9,400x = 377,524,900
  5. Step 5: Solve for x
    x = 377,524,900/9,400
  6. Step 6: Final answer
    x = 40,162.22

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.