Home / 12,245.22-18,372.96-6,405.66

Finding the Fourth Proportional to 12,245.22, 18,372.96 and 6,405.66

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Solution

The fourth proportional to 12,245.22, 18,372.96 and 6,405.66 is: 9,611.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,245.22 : 18,372.96 = 6,405.66 : x
  2. Step 2: Convert to fraction form
    12,245.22/18,372.96 = 6,405.66/x
  3. Step 3: Cross multiply
    12,245.22x = 18,372.96 × 6,405.66
  4. Step 4: Simplify right side
    12,245.22x = 117,690,934.95
  5. Step 5: Solve for x
    x = 117,690,934.95/12,245.22
  6. Step 6: Final answer
    x = 9,611.17

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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.