Home / 12,156.92-18,235.12-3,391.60

Finding the Fourth Proportional to 12,156.92, 18,235.12 and 3,391.60

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Solution

The fourth proportional to 12,156.92, 18,235.12 and 3,391.60 is: 5,087.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.92 : 18,235.12 = 3,391.60 : x
  2. Step 2: Convert to fraction form
    12,156.92/18,235.12 = 3,391.60/x
  3. Step 3: Cross multiply
    12,156.92x = 18,235.12 × 3,391.60
  4. Step 4: Simplify right side
    12,156.92x = 61,846,232.99
  5. Step 5: Solve for x
    x = 61,846,232.99/12,156.92
  6. Step 6: Final answer
    x = 5,087.33

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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.