Home / 12,158.94-18,238.41-3,394.08

Finding the Fourth Proportional to 12,158.94, 18,238.41 and 3,394.08

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Solution

The fourth proportional to 12,158.94, 18,238.41 and 3,394.08 is: 5,091.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.94 : 18,238.41 = 3,394.08 : x
  2. Step 2: Convert to fraction form
    12,158.94/18,238.41 = 3,394.08/x
  3. Step 3: Cross multiply
    12,158.94x = 18,238.41 × 3,394.08
  4. Step 4: Simplify right side
    12,158.94x = 61,902,622.61
  5. Step 5: Solve for x
    x = 61,902,622.61/12,158.94
  6. Step 6: Final answer
    x = 5,091.12

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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.