Home / 31,787.31-43,868.48-18,361.02

Finding the Fourth Proportional to 31,787.31, 43,868.48 and 18,361.02

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Solution

The fourth proportional to 31,787.31, 43,868.48 and 18,361.02 is: 25,339.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,787.31 : 43,868.48 = 18,361.02 : x
  2. Step 2: Convert to fraction form
    31,787.31/43,868.48 = 18,361.02/x
  3. Step 3: Cross multiply
    31,787.31x = 43,868.48 × 18,361.02
  4. Step 4: Simplify right side
    31,787.31x = 805,469,946.84
  5. Step 5: Solve for x
    x = 805,469,946.84/31,787.31
  6. Step 6: Final answer
    x = 25,339.36

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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.