Home / 31,811.24-43,897.46-19,874

Finding the Fourth Proportional to 31,811.24, 43,897.46 and 19,874

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Solution

The fourth proportional to 31,811.24, 43,897.46 and 19,874 is: 27,424.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,811.24 : 43,897.46 = 19,874 : x
  2. Step 2: Convert to fraction form
    31,811.24/43,897.46 = 19,874/x
  3. Step 3: Cross multiply
    31,811.24x = 43,897.46 × 19,874
  4. Step 4: Simplify right side
    31,811.24x = 872,418,120.04
  5. Step 5: Solve for x
    x = 872,418,120.04/31,811.24
  6. Step 6: Final answer
    x = 27,424.84

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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.