Home / 28,299.20-39,057.27-20,367.68

Finding the Fourth Proportional to 28,299.20, 39,057.27 and 20,367.68

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Solution

The fourth proportional to 28,299.20, 39,057.27 and 20,367.68 is: 28,110.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,299.20 : 39,057.27 = 20,367.68 : x
  2. Step 2: Convert to fraction form
    28,299.20/39,057.27 = 20,367.68/x
  3. Step 3: Cross multiply
    28,299.20x = 39,057.27 × 20,367.68
  4. Step 4: Simplify right side
    28,299.20x = 795,505,977.03
  5. Step 5: Solve for x
    x = 795,505,977.03/28,299.20
  6. Step 6: Final answer
    x = 28,110.55

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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.