Home / 20,839.44-28,756.40-11,884.58

Finding the Fourth Proportional to 20,839.44, 28,756.40 and 11,884.58

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Solution

The fourth proportional to 20,839.44, 28,756.40 and 11,884.58 is: 16,399.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.44 : 28,756.40 = 11,884.58 : x
  2. Step 2: Convert to fraction form
    20,839.44/28,756.40 = 11,884.58/x
  3. Step 3: Cross multiply
    20,839.44x = 28,756.40 × 11,884.58
  4. Step 4: Simplify right side
    20,839.44x = 341,757,736.31
  5. Step 5: Solve for x
    x = 341,757,736.31/20,839.44
  6. Step 6: Final answer
    x = 16,399.56

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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.