Home / 27,787.52-38,321.94-20,251.42

Finding the Fourth Proportional to 27,787.52, 38,321.94 and 20,251.42

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Solution

The fourth proportional to 27,787.52, 38,321.94 and 20,251.42 is: 27,928.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.52 : 38,321.94 = 20,251.42 : x
  2. Step 2: Convert to fraction form
    27,787.52/38,321.94 = 20,251.42/x
  3. Step 3: Cross multiply
    27,787.52x = 38,321.94 × 20,251.42
  4. Step 4: Simplify right side
    27,787.52x = 776,073,682.29
  5. Step 5: Solve for x
    x = 776,073,682.29/27,787.52
  6. Step 6: Final answer
    x = 27,928.85

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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.