Home / 18,787.82-25,868.18-15,949.31

Finding the Fourth Proportional to 18,787.82, 25,868.18 and 15,949.31

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Solution

The fourth proportional to 18,787.82, 25,868.18 and 15,949.31 is: 21,959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.82 : 25,868.18 = 15,949.31 : x
  2. Step 2: Convert to fraction form
    18,787.82/25,868.18 = 15,949.31/x
  3. Step 3: Cross multiply
    18,787.82x = 25,868.18 × 15,949.31
  4. Step 4: Simplify right side
    18,787.82x = 412,579,726.50
  5. Step 5: Solve for x
    x = 412,579,726.50/18,787.82
  6. Step 6: Final answer
    x = 21,959.95

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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.