Home / 31,406.82-43,324.11-19,900.68

Finding the Fourth Proportional to 31,406.82, 43,324.11 and 19,900.68

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Solution

The fourth proportional to 31,406.82, 43,324.11 and 19,900.68 is: 27,451.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,406.82 : 43,324.11 = 19,900.68 : x
  2. Step 2: Convert to fraction form
    31,406.82/43,324.11 = 19,900.68/x
  3. Step 3: Cross multiply
    31,406.82x = 43,324.11 × 19,900.68
  4. Step 4: Simplify right side
    31,406.82x = 862,179,249.39
  5. Step 5: Solve for x
    x = 862,179,249.39/31,406.82
  6. Step 6: Final answer
    x = 27,451.98

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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.