Home / 20,787.72-31,181.60-5,794.24

Finding the Fourth Proportional to 20,787.72, 31,181.60 and 5,794.24

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Solution

The fourth proportional to 20,787.72, 31,181.60 and 5,794.24 is: 8,691.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.72 : 31,181.60 = 5,794.24 : x
  2. Step 2: Convert to fraction form
    20,787.72/31,181.60 = 5,794.24/x
  3. Step 3: Cross multiply
    20,787.72x = 31,181.60 × 5,794.24
  4. Step 4: Simplify right side
    20,787.72x = 180,673,673.98
  5. Step 5: Solve for x
    x = 180,673,673.98/20,787.72
  6. Step 6: Final answer
    x = 8,691.37

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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.