Home / 20,936.16-31,404.24-13,150.44

Finding the Fourth Proportional to 20,936.16, 31,404.24 and 13,150.44

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Solution

The fourth proportional to 20,936.16, 31,404.24 and 13,150.44 is: 19,725.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.16 : 31,404.24 = 13,150.44 : x
  2. Step 2: Convert to fraction form
    20,936.16/31,404.24 = 13,150.44/x
  3. Step 3: Cross multiply
    20,936.16x = 31,404.24 × 13,150.44
  4. Step 4: Simplify right side
    20,936.16x = 412,979,573.87
  5. Step 5: Solve for x
    x = 412,979,573.87/20,936.16
  6. Step 6: Final answer
    x = 19,725.66

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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.