Home / 20,137.16-30,205.90-6,286.60

Finding the Fourth Proportional to 20,137.16, 30,205.90 and 6,286.60

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Solution

The fourth proportional to 20,137.16, 30,205.90 and 6,286.60 is: 9,429.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.16 : 30,205.90 = 6,286.60 : x
  2. Step 2: Convert to fraction form
    20,137.16/30,205.90 = 6,286.60/x
  3. Step 3: Cross multiply
    20,137.16x = 30,205.90 × 6,286.60
  4. Step 4: Simplify right side
    20,137.16x = 189,892,410.94
  5. Step 5: Solve for x
    x = 189,892,410.94/20,137.16
  6. Step 6: Final answer
    x = 9,429.95

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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.