Home / 20,180.24-27,849.12-11,801.60

Finding the Fourth Proportional to 20,180.24, 27,849.12 and 11,801.60

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Solution

The fourth proportional to 20,180.24, 27,849.12 and 11,801.60 is: 16,286.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.24 : 27,849.12 = 11,801.60 : x
  2. Step 2: Convert to fraction form
    20,180.24/27,849.12 = 11,801.60/x
  3. Step 3: Cross multiply
    20,180.24x = 27,849.12 × 11,801.60
  4. Step 4: Simplify right side
    20,180.24x = 328,664,174.59
  5. Step 5: Solve for x
    x = 328,664,174.59/20,180.24
  6. Step 6: Final answer
    x = 16,286.44

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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.