Home / 12,190.58-18,285.96-3,425.66

Finding the Fourth Proportional to 12,190.58, 18,285.96 and 3,425.66

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Solution

The fourth proportional to 12,190.58, 18,285.96 and 3,425.66 is: 5,138.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.58 : 18,285.96 = 3,425.66 : x
  2. Step 2: Convert to fraction form
    12,190.58/18,285.96 = 3,425.66/x
  3. Step 3: Cross multiply
    12,190.58x = 18,285.96 × 3,425.66
  4. Step 4: Simplify right side
    12,190.58x = 62,641,481.73
  5. Step 5: Solve for x
    x = 62,641,481.73/12,190.58
  6. Step 6: Final answer
    x = 5,138.52

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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.