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Finding the Fourth Proportional to 22,172, 33,258 and 9,860

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Solution

The fourth proportional to 22,172, 33,258 and 9,860 is: 14,790

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,172 : 33,258 = 9,860 : x
  2. Step 2: Convert to fraction form
    22,172/33,258 = 9,860/x
  3. Step 3: Cross multiply
    22,172x = 33,258 × 9,860
  4. Step 4: Simplify right side
    22,172x = 327,923,880
  5. Step 5: Solve for x
    x = 327,923,880/22,172
  6. Step 6: Final answer
    x = 14,790

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.