Home / 20,142.68-27,797.38-11,190.56

Finding the Fourth Proportional to 20,142.68, 27,797.38 and 11,190.56

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Solution

The fourth proportional to 20,142.68, 27,797.38 and 11,190.56 is: 15,443.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.68 : 27,797.38 = 11,190.56 : x
  2. Step 2: Convert to fraction form
    20,142.68/27,797.38 = 11,190.56/x
  3. Step 3: Cross multiply
    20,142.68x = 27,797.38 × 11,190.56
  4. Step 4: Simplify right side
    20,142.68x = 311,068,081.77
  5. Step 5: Solve for x
    x = 311,068,081.77/20,142.68
  6. Step 6: Final answer
    x = 15,443.24

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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.