Home / 20,804.58-31,249.80-19,906.29

Finding the Fourth Proportional to 20,804.58, 31,249.80 and 19,906.29

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Solution

The fourth proportional to 20,804.58, 31,249.80 and 19,906.29 is: 29,900.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.58 : 31,249.80 = 19,906.29 : x
  2. Step 2: Convert to fraction form
    20,804.58/31,249.80 = 19,906.29/x
  3. Step 3: Cross multiply
    20,804.58x = 31,249.80 × 19,906.29
  4. Step 4: Simplify right side
    20,804.58x = 622,067,581.24
  5. Step 5: Solve for x
    x = 622,067,581.24/20,804.58
  6. Step 6: Final answer
    x = 29,900.51

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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.