Home / 11,993.55-17,991.83-6,439.26

Finding the Fourth Proportional to 11,993.55, 17,991.83 and 6,439.26

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Solution

The fourth proportional to 11,993.55, 17,991.83 and 6,439.26 is: 9,659.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,993.55 : 17,991.83 = 6,439.26 : x
  2. Step 2: Convert to fraction form
    11,993.55/17,991.83 = 6,439.26/x
  3. Step 3: Cross multiply
    11,993.55x = 17,991.83 × 6,439.26
  4. Step 4: Simplify right side
    11,993.55x = 115,854,071.25
  5. Step 5: Solve for x
    x = 115,854,071.25/11,993.55
  6. Step 6: Final answer
    x = 9,659.70

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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.