Home / 11,078.57-16,617.80-2,758.55

Finding the Fourth Proportional to 11,078.57, 16,617.80 and 2,758.55

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Solution

The fourth proportional to 11,078.57, 16,617.80 and 2,758.55 is: 4,137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.57 : 16,617.80 = 2,758.55 : x
  2. Step 2: Convert to fraction form
    11,078.57/16,617.80 = 2,758.55/x
  3. Step 3: Cross multiply
    11,078.57x = 16,617.80 × 2,758.55
  4. Step 4: Simplify right side
    11,078.57x = 45,840,935.31
  5. Step 5: Solve for x
    x = 45,840,935.31/11,078.57
  6. Step 6: Final answer
    x = 4,137.80

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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.