Home / 11,991.24-17,990.10-4,205.52

Finding the Fourth Proportional to 11,991.24, 17,990.10 and 4,205.52

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Solution

The fourth proportional to 11,991.24, 17,990.10 and 4,205.52 is: 6,309.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.24 : 17,990.10 = 4,205.52 : x
  2. Step 2: Convert to fraction form
    11,991.24/17,990.10 = 4,205.52/x
  3. Step 3: Cross multiply
    11,991.24x = 17,990.10 × 4,205.52
  4. Step 4: Simplify right side
    11,991.24x = 75,657,725.35
  5. Step 5: Solve for x
    x = 75,657,725.35/11,991.24
  6. Step 6: Final answer
    x = 6,309.42

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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.