Home / 12,238.62-18,346.41-6,388.38

Finding the Fourth Proportional to 12,238.62, 18,346.41 and 6,388.38

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Solution

The fourth proportional to 12,238.62, 18,346.41 and 6,388.38 is: 9,576.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,238.62 : 18,346.41 = 6,388.38 : x
  2. Step 2: Convert to fraction form
    12,238.62/18,346.41 = 6,388.38/x
  3. Step 3: Cross multiply
    12,238.62x = 18,346.41 × 6,388.38
  4. Step 4: Simplify right side
    12,238.62x = 117,203,838.72
  5. Step 5: Solve for x
    x = 117,203,838.72/12,238.62
  6. Step 6: Final answer
    x = 9,576.56

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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.