Home / 11,972.28-17,944.36-5,390.76

Finding the Fourth Proportional to 11,972.28, 17,944.36 and 5,390.76

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Solution

The fourth proportional to 11,972.28, 17,944.36 and 5,390.76 is: 8,079.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,972.28 : 17,944.36 = 5,390.76 : x
  2. Step 2: Convert to fraction form
    11,972.28/17,944.36 = 5,390.76/x
  3. Step 3: Cross multiply
    11,972.28x = 17,944.36 × 5,390.76
  4. Step 4: Simplify right side
    11,972.28x = 96,733,738.11
  5. Step 5: Solve for x
    x = 96,733,738.11/11,972.28
  6. Step 6: Final answer
    x = 8,079.81

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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.