Home / 18,268.41-27,404.36-5,120.75

Finding the Fourth Proportional to 18,268.41, 27,404.36 and 5,120.75

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Solution

The fourth proportional to 18,268.41, 27,404.36 and 5,120.75 is: 7,681.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,268.41 : 27,404.36 = 5,120.75 : x
  2. Step 2: Convert to fraction form
    18,268.41/27,404.36 = 5,120.75/x
  3. Step 3: Cross multiply
    18,268.41x = 27,404.36 × 5,120.75
  4. Step 4: Simplify right side
    18,268.41x = 140,330,713.84
  5. Step 5: Solve for x
    x = 140,330,713.84/18,268.41
  6. Step 6: Final answer
    x = 7,681.61

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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.