Home / 12,134.88-18,203.63-3,815.15

Finding the Fourth Proportional to 12,134.88, 18,203.63 and 3,815.15

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Solution

The fourth proportional to 12,134.88, 18,203.63 and 3,815.15 is: 5,723.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,134.88 : 18,203.63 = 3,815.15 : x
  2. Step 2: Convert to fraction form
    12,134.88/18,203.63 = 3,815.15/x
  3. Step 3: Cross multiply
    12,134.88x = 18,203.63 × 3,815.15
  4. Step 4: Simplify right side
    12,134.88x = 69,449,468.90
  5. Step 5: Solve for x
    x = 69,449,468.90/12,134.88
  6. Step 6: Final answer
    x = 5,723.13

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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.