Home / 11,976.20-17,966.47-4,078.31

Finding the Fourth Proportional to 11,976.20, 17,966.47 and 4,078.31

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Solution

The fourth proportional to 11,976.20, 17,966.47 and 4,078.31 is: 6,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,976.20 : 17,966.47 = 4,078.31 : x
  2. Step 2: Convert to fraction form
    11,976.20/17,966.47 = 4,078.31/x
  3. Step 3: Cross multiply
    11,976.20x = 17,966.47 × 4,078.31
  4. Step 4: Simplify right side
    11,976.20x = 73,272,734.24
  5. Step 5: Solve for x
    x = 73,272,734.24/11,976.20
  6. Step 6: Final answer
    x = 6,118.20

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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.