Home / 20,209.58-27,887.78-11,134.54

Finding the Fourth Proportional to 20,209.58, 27,887.78 and 11,134.54

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Solution

The fourth proportional to 20,209.58, 27,887.78 and 11,134.54 is: 15,364.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.58 : 27,887.78 = 11,134.54 : x
  2. Step 2: Convert to fraction form
    20,209.58/27,887.78 = 11,134.54/x
  3. Step 3: Cross multiply
    20,209.58x = 27,887.78 × 11,134.54
  4. Step 4: Simplify right side
    20,209.58x = 310,517,601.92
  5. Step 5: Solve for x
    x = 310,517,601.92/20,209.58
  6. Step 6: Final answer
    x = 15,364.88

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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.