Home / 21,896.38-30,217.12-11,960.38

Finding the Fourth Proportional to 21,896.38, 30,217.12 and 11,960.38

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Solution

The fourth proportional to 21,896.38, 30,217.12 and 11,960.38 is: 16,505.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,896.38 : 30,217.12 = 11,960.38 : x
  2. Step 2: Convert to fraction form
    21,896.38/30,217.12 = 11,960.38/x
  3. Step 3: Cross multiply
    21,896.38x = 30,217.12 × 11,960.38
  4. Step 4: Simplify right side
    21,896.38x = 361,408,056.72
  5. Step 5: Solve for x
    x = 361,408,056.72/21,896.38
  6. Step 6: Final answer
    x = 16,505.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.