Home / 11,982.44-18,005.52-6,439.88

Finding the Fourth Proportional to 11,982.44, 18,005.52 and 6,439.88

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Solution

The fourth proportional to 11,982.44, 18,005.52 and 6,439.88 is: 9,676.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,982.44 : 18,005.52 = 6,439.88 : x
  2. Step 2: Convert to fraction form
    11,982.44/18,005.52 = 6,439.88/x
  3. Step 3: Cross multiply
    11,982.44x = 18,005.52 × 6,439.88
  4. Step 4: Simplify right side
    11,982.44x = 115,953,388.14
  5. Step 5: Solve for x
    x = 115,953,388.14/11,982.44
  6. Step 6: Final answer
    x = 9,676.94

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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.