Home / 31,787.91-43,872.75-18,356.76

Finding the Fourth Proportional to 31,787.91, 43,872.75 and 18,356.76

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Solution

The fourth proportional to 31,787.91, 43,872.75 and 18,356.76 is: 25,335.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,787.91 : 43,872.75 = 18,356.76 : x
  2. Step 2: Convert to fraction form
    31,787.91/43,872.75 = 18,356.76/x
  3. Step 3: Cross multiply
    31,787.91x = 43,872.75 × 18,356.76
  4. Step 4: Simplify right side
    31,787.91x = 805,361,542.29
  5. Step 5: Solve for x
    x = 805,361,542.29/31,787.91
  6. Step 6: Final answer
    x = 25,335.47

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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.