Home / 20,815.16-31,183.86-16,188.44

Finding the Fourth Proportional to 20,815.16, 31,183.86 and 16,188.44

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Solution

The fourth proportional to 20,815.16, 31,183.86 and 16,188.44 is: 24,252.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,815.16 : 31,183.86 = 16,188.44 : x
  2. Step 2: Convert to fraction form
    20,815.16/31,183.86 = 16,188.44/x
  3. Step 3: Cross multiply
    20,815.16x = 31,183.86 × 16,188.44
  4. Step 4: Simplify right side
    20,815.16x = 504,818,046.58
  5. Step 5: Solve for x
    x = 504,818,046.58/20,815.16
  6. Step 6: Final answer
    x = 24,252.42

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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.