Home / 12,288.66-18,435.04-3,855.72

Finding the Fourth Proportional to 12,288.66, 18,435.04 and 3,855.72

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Solution

The fourth proportional to 12,288.66, 18,435.04 and 3,855.72 is: 5,784.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288.66 : 18,435.04 = 3,855.72 : x
  2. Step 2: Convert to fraction form
    12,288.66/18,435.04 = 3,855.72/x
  3. Step 3: Cross multiply
    12,288.66x = 18,435.04 × 3,855.72
  4. Step 4: Simplify right side
    12,288.66x = 71,080,352.43
  5. Step 5: Solve for x
    x = 71,080,352.43/12,288.66
  6. Step 6: Final answer
    x = 5,784.22

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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.