Home / 13,845.88-20,771.56-3,985.26

Finding the Fourth Proportional to 13,845.88, 20,771.56 and 3,985.26

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Solution

The fourth proportional to 13,845.88, 20,771.56 and 3,985.26 is: 5,978.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.88 : 20,771.56 = 3,985.26 : x
  2. Step 2: Convert to fraction form
    13,845.88/20,771.56 = 3,985.26/x
  3. Step 3: Cross multiply
    13,845.88x = 20,771.56 × 3,985.26
  4. Step 4: Simplify right side
    13,845.88x = 82,780,067.21
  5. Step 5: Solve for x
    x = 82,780,067.21/13,845.88
  6. Step 6: Final answer
    x = 5,978.68

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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.