Home / 20,936.88-31,409.82-11,073.78

Finding the Fourth Proportional to 20,936.88, 31,409.82 and 11,073.78

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Solution

The fourth proportional to 20,936.88, 31,409.82 and 11,073.78 is: 16,613.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.88 : 31,409.82 = 11,073.78 : x
  2. Step 2: Convert to fraction form
    20,936.88/31,409.82 = 11,073.78/x
  3. Step 3: Cross multiply
    20,936.88x = 31,409.82 × 11,073.78
  4. Step 4: Simplify right side
    20,936.88x = 347,825,436.52
  5. Step 5: Solve for x
    x = 347,825,436.52/20,936.88
  6. Step 6: Final answer
    x = 16,613.05

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1.5x scale

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.