Home / 12,255.42-18,380.09-3,490.41

Finding the Fourth Proportional to 12,255.42, 18,380.09 and 3,490.41

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Solution

The fourth proportional to 12,255.42, 18,380.09 and 3,490.41 is: 5,234.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.42 : 18,380.09 = 3,490.41 : x
  2. Step 2: Convert to fraction form
    12,255.42/18,380.09 = 3,490.41/x
  3. Step 3: Cross multiply
    12,255.42x = 18,380.09 × 3,490.41
  4. Step 4: Simplify right side
    12,255.42x = 64,153,940.58
  5. Step 5: Solve for x
    x = 64,153,940.58/12,255.42
  6. Step 6: Final answer
    x = 5,234.74

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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.