Home / 20,134.14-27,811.25-15,324.86

Finding the Fourth Proportional to 20,134.14, 27,811.25 and 15,324.86

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Solution

The fourth proportional to 20,134.14, 27,811.25 and 15,324.86 is: 21,168.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.14 : 27,811.25 = 15,324.86 : x
  2. Step 2: Convert to fraction form
    20,134.14/27,811.25 = 15,324.86/x
  3. Step 3: Cross multiply
    20,134.14x = 27,811.25 × 15,324.86
  4. Step 4: Simplify right side
    20,134.14x = 426,203,563.05
  5. Step 5: Solve for x
    x = 426,203,563.05/20,134.14
  6. Step 6: Final answer
    x = 21,168.21

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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.