Home / 18,273.68-27,388.56-8,399.36

Finding the Fourth Proportional to 18,273.68, 27,388.56 and 8,399.36

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Solution

The fourth proportional to 18,273.68, 27,388.56 and 8,399.36 is: 12,588.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,273.68 : 27,388.56 = 8,399.36 : x
  2. Step 2: Convert to fraction form
    18,273.68/27,388.56 = 8,399.36/x
  3. Step 3: Cross multiply
    18,273.68x = 27,388.56 × 8,399.36
  4. Step 4: Simplify right side
    18,273.68x = 230,046,375.32
  5. Step 5: Solve for x
    x = 230,046,375.32/18,273.68
  6. Step 6: Final answer
    x = 12,588.95

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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.