Home / 31,336.97-43,229.87-20,577.64

Finding the Fourth Proportional to 31,336.97, 43,229.87 and 20,577.64

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Solution

The fourth proportional to 31,336.97, 43,229.87 and 20,577.64 is: 28,387.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,336.97 : 43,229.87 = 20,577.64 : x
  2. Step 2: Convert to fraction form
    31,336.97/43,229.87 = 20,577.64/x
  3. Step 3: Cross multiply
    31,336.97x = 43,229.87 × 20,577.64
  4. Step 4: Simplify right side
    31,336.97x = 889,568,491.14
  5. Step 5: Solve for x
    x = 889,568,491.14/31,336.97
  6. Step 6: Final answer
    x = 28,387.19

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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.