Home / 12,311.22-18,469.74-3,991.24

Finding the Fourth Proportional to 12,311.22, 18,469.74 and 3,991.24

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Solution

The fourth proportional to 12,311.22, 18,469.74 and 3,991.24 is: 5,987.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.22 : 18,469.74 = 3,991.24 : x
  2. Step 2: Convert to fraction form
    12,311.22/18,469.74 = 3,991.24/x
  3. Step 3: Cross multiply
    12,311.22x = 18,469.74 × 3,991.24
  4. Step 4: Simplify right side
    12,311.22x = 73,717,165.08
  5. Step 5: Solve for x
    x = 73,717,165.08/12,311.22
  6. Step 6: Final answer
    x = 5,987.80

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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.