Home / 11,078.21-16,611.08-3,678.71

Finding the Fourth Proportional to 11,078.21, 16,611.08 and 3,678.71

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Solution

The fourth proportional to 11,078.21, 16,611.08 and 3,678.71 is: 5,515.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.21 : 16,611.08 = 3,678.71 : x
  2. Step 2: Convert to fraction form
    11,078.21/16,611.08 = 3,678.71/x
  3. Step 3: Cross multiply
    11,078.21x = 16,611.08 × 3,678.71
  4. Step 4: Simplify right side
    11,078.21x = 61,107,272.25
  5. Step 5: Solve for x
    x = 61,107,272.25/11,078.21
  6. Step 6: Final answer
    x = 5,515.99

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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.