Home / 20,525.20-30,787.80-4,942.82

Finding the Fourth Proportional to 20,525.20, 30,787.80 and 4,942.82

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Solution

The fourth proportional to 20,525.20, 30,787.80 and 4,942.82 is: 7,414.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,525.20 : 30,787.80 = 4,942.82 : x
  2. Step 2: Convert to fraction form
    20,525.20/30,787.80 = 4,942.82/x
  3. Step 3: Cross multiply
    20,525.20x = 30,787.80 × 4,942.82
  4. Step 4: Simplify right side
    20,525.20x = 152,178,553.60
  5. Step 5: Solve for x
    x = 152,178,553.60/20,525.20
  6. Step 6: Final answer
    x = 7,414.23

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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.