Home / 12,195.90-18,295.08-3,311.37

Finding the Fourth Proportional to 12,195.90, 18,295.08 and 3,311.37

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Solution

The fourth proportional to 12,195.90, 18,295.08 and 3,311.37 is: 4,967.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.90 : 18,295.08 = 3,311.37 : x
  2. Step 2: Convert to fraction form
    12,195.90/18,295.08 = 3,311.37/x
  3. Step 3: Cross multiply
    12,195.90x = 18,295.08 × 3,311.37
  4. Step 4: Simplify right side
    12,195.90x = 60,581,766.64
  5. Step 5: Solve for x
    x = 60,581,766.64/12,195.90
  6. Step 6: Final answer
    x = 4,967.39

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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.