Home / 20,796.36-31,189.68-10,255.56

Finding the Fourth Proportional to 20,796.36, 31,189.68 and 10,255.56

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Solution

The fourth proportional to 20,796.36, 31,189.68 and 10,255.56 is: 15,380.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.36 : 31,189.68 = 10,255.56 : x
  2. Step 2: Convert to fraction form
    20,796.36/31,189.68 = 10,255.56/x
  3. Step 3: Cross multiply
    20,796.36x = 31,189.68 × 10,255.56
  4. Step 4: Simplify right side
    20,796.36x = 319,867,634.62
  5. Step 5: Solve for x
    x = 319,867,634.62/20,796.36
  6. Step 6: Final answer
    x = 15,380.94

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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.