Home / 18,091.28-27,138.64-5,611.44

Finding the Fourth Proportional to 18,091.28, 27,138.64 and 5,611.44

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Solution

The fourth proportional to 18,091.28, 27,138.64 and 5,611.44 is: 8,417.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,091.28 : 27,138.64 = 5,611.44 : x
  2. Step 2: Convert to fraction form
    18,091.28/27,138.64 = 5,611.44/x
  3. Step 3: Cross multiply
    18,091.28x = 27,138.64 × 5,611.44
  4. Step 4: Simplify right side
    18,091.28x = 152,286,850.04
  5. Step 5: Solve for x
    x = 152,286,850.04/18,091.28
  6. Step 6: Final answer
    x = 8,417.69

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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.