Home / 31,787.81-43,869.17-18,361.52

Finding the Fourth Proportional to 31,787.81, 43,869.17 and 18,361.52

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Solution

The fourth proportional to 31,787.81, 43,869.17 and 18,361.52 is: 25,340.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,787.81 : 43,869.17 = 18,361.52 : x
  2. Step 2: Convert to fraction form
    31,787.81/43,869.17 = 18,361.52/x
  3. Step 3: Cross multiply
    31,787.81x = 43,869.17 × 18,361.52
  4. Step 4: Simplify right side
    31,787.81x = 805,504,550.53
  5. Step 5: Solve for x
    x = 805,504,550.53/31,787.81
  6. Step 6: Final answer
    x = 25,340.05

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.