Home / 11,991.76-17,992.83-6,438.62

Finding the Fourth Proportional to 11,991.76, 17,992.83 and 6,438.62

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Solution

The fourth proportional to 11,991.76, 17,992.83 and 6,438.62 is: 9,660.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.76 : 17,992.83 = 6,438.62 : x
  2. Step 2: Convert to fraction form
    11,991.76/17,992.83 = 6,438.62/x
  3. Step 3: Cross multiply
    11,991.76x = 17,992.83 × 6,438.62
  4. Step 4: Simplify right side
    11,991.76x = 115,848,962.90
  5. Step 5: Solve for x
    x = 115,848,962.90/11,991.76
  6. Step 6: Final answer
    x = 9,660.72

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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.