Home / 11,977.20-17,973.99-4,186.02

Finding the Fourth Proportional to 11,977.20, 17,973.99 and 4,186.02

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Solution

The fourth proportional to 11,977.20, 17,973.99 and 4,186.02 is: 6,281.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,977.20 : 17,973.99 = 4,186.02 : x
  2. Step 2: Convert to fraction form
    11,977.20/17,973.99 = 4,186.02/x
  3. Step 3: Cross multiply
    11,977.20x = 17,973.99 × 4,186.02
  4. Step 4: Simplify right side
    11,977.20x = 75,239,481.62
  5. Step 5: Solve for x
    x = 75,239,481.62/11,977.20
  6. Step 6: Final answer
    x = 6,281.89

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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.