Home / 12,192.80-18,289.26-3,427.79

Finding the Fourth Proportional to 12,192.80, 18,289.26 and 3,427.79

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Solution

The fourth proportional to 12,192.80, 18,289.26 and 3,427.79 is: 5,141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,192.80 : 18,289.26 = 3,427.79 : x
  2. Step 2: Convert to fraction form
    12,192.80/18,289.26 = 3,427.79/x
  3. Step 3: Cross multiply
    12,192.80x = 18,289.26 × 3,427.79
  4. Step 4: Simplify right side
    12,192.80x = 62,691,651.09
  5. Step 5: Solve for x
    x = 62,691,651.09/12,192.80
  6. Step 6: Final answer
    x = 5,141.70

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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.