Home / 12,192.24-18,286.72-3,427.90

Finding the Fourth Proportional to 12,192.24, 18,286.72 and 3,427.90

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Solution

The fourth proportional to 12,192.24, 18,286.72 and 3,427.90 is: 5,141.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,192.24 : 18,286.72 = 3,427.90 : x
  2. Step 2: Convert to fraction form
    12,192.24/18,286.72 = 3,427.90/x
  3. Step 3: Cross multiply
    12,192.24x = 18,286.72 × 3,427.90
  4. Step 4: Simplify right side
    12,192.24x = 62,685,047.49
  5. Step 5: Solve for x
    x = 62,685,047.49/12,192.24
  6. Step 6: Final answer
    x = 5,141.39

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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.