Home / 12,155.88-18,234.66-3,836.28

Finding the Fourth Proportional to 12,155.88, 18,234.66 and 3,836.28

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Solution

The fourth proportional to 12,155.88, 18,234.66 and 3,836.28 is: 5,754.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.88 : 18,234.66 = 3,836.28 : x
  2. Step 2: Convert to fraction form
    12,155.88/18,234.66 = 3,836.28/x
  3. Step 3: Cross multiply
    12,155.88x = 18,234.66 × 3,836.28
  4. Step 4: Simplify right side
    12,155.88x = 69,953,261.46
  5. Step 5: Solve for x
    x = 69,953,261.46/12,155.88
  6. Step 6: Final answer
    x = 5,754.69

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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.