Home / 20,087.37-27,720.57-11,134.85

Finding the Fourth Proportional to 20,087.37, 27,720.57 and 11,134.85

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Solution

The fourth proportional to 20,087.37, 27,720.57 and 11,134.85 is: 15,366.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.37 : 27,720.57 = 11,134.85 : x
  2. Step 2: Convert to fraction form
    20,087.37/27,720.57 = 11,134.85/x
  3. Step 3: Cross multiply
    20,087.37x = 27,720.57 × 11,134.85
  4. Step 4: Simplify right side
    20,087.37x = 308,664,388.86
  5. Step 5: Solve for x
    x = 308,664,388.86/20,087.37
  6. Step 6: Final answer
    x = 15,366.09

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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.