Home / 31,887.44-47,787.40-20,179.72

Finding the Fourth Proportional to 31,887.44, 47,787.40 and 20,179.72

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Solution

The fourth proportional to 31,887.44, 47,787.40 and 20,179.72 is: 30,241.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,887.44 : 47,787.40 = 20,179.72 : x
  2. Step 2: Convert to fraction form
    31,887.44/47,787.40 = 20,179.72/x
  3. Step 3: Cross multiply
    31,887.44x = 47,787.40 × 20,179.72
  4. Step 4: Simplify right side
    31,887.44x = 964,336,351.53
  5. Step 5: Solve for x
    x = 964,336,351.53/31,887.44
  6. Step 6: Final answer
    x = 30,241.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.