Home / 11,987.55-17,977.41-4,194.54

Finding the Fourth Proportional to 11,987.55, 17,977.41 and 4,194.54

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Solution

The fourth proportional to 11,987.55, 17,977.41 and 4,194.54 is: 6,290.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.55 : 17,977.41 = 4,194.54 : x
  2. Step 2: Convert to fraction form
    11,987.55/17,977.41 = 4,194.54/x
  3. Step 3: Cross multiply
    11,987.55x = 17,977.41 × 4,194.54
  4. Step 4: Simplify right side
    11,987.55x = 75,406,965.34
  5. Step 5: Solve for x
    x = 75,406,965.34/11,987.55
  6. Step 6: Final answer
    x = 6,290.44

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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.