Home / 12,255.67-18,380.46-3,490.66

Finding the Fourth Proportional to 12,255.67, 18,380.46 and 3,490.66

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Solution

The fourth proportional to 12,255.67, 18,380.46 and 3,490.66 is: 5,235.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.67 : 18,380.46 = 3,490.66 : x
  2. Step 2: Convert to fraction form
    12,255.67/18,380.46 = 3,490.66/x
  3. Step 3: Cross multiply
    12,255.67x = 18,380.46 × 3,490.66
  4. Step 4: Simplify right side
    12,255.67x = 64,159,844.60
  5. Step 5: Solve for x
    x = 64,159,844.60/12,255.67
  6. Step 6: Final answer
    x = 5,235.12

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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.