Home / 11,385.34-17,078.82-3,991.66

Finding the Fourth Proportional to 11,385.34, 17,078.82 and 3,991.66

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Solution

The fourth proportional to 11,385.34, 17,078.82 and 3,991.66 is: 5,987.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.34 : 17,078.82 = 3,991.66 : x
  2. Step 2: Convert to fraction form
    11,385.34/17,078.82 = 3,991.66/x
  3. Step 3: Cross multiply
    11,385.34x = 17,078.82 × 3,991.66
  4. Step 4: Simplify right side
    11,385.34x = 68,172,842.64
  5. Step 5: Solve for x
    x = 68,172,842.64/11,385.34
  6. Step 6: Final answer
    x = 5,987.77

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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.