Home / 18,203.28-25,129.46-11,131.96

Finding the Fourth Proportional to 18,203.28, 25,129.46 and 11,131.96

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Solution

The fourth proportional to 18,203.28, 25,129.46 and 11,131.96 is: 15,367.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.28 : 25,129.46 = 11,131.96 : x
  2. Step 2: Convert to fraction form
    18,203.28/25,129.46 = 11,131.96/x
  3. Step 3: Cross multiply
    18,203.28x = 25,129.46 × 11,131.96
  4. Step 4: Simplify right side
    18,203.28x = 279,740,143.54
  5. Step 5: Solve for x
    x = 279,740,143.54/18,203.28
  6. Step 6: Final answer
    x = 15,367.57

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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.