Home / 11,621.12-17,431.52-2,855.95

Finding the Fourth Proportional to 11,621.12, 17,431.52 and 2,855.95

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Solution

The fourth proportional to 11,621.12, 17,431.52 and 2,855.95 is: 4,283.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.12 : 17,431.52 = 2,855.95 : x
  2. Step 2: Convert to fraction form
    11,621.12/17,431.52 = 2,855.95/x
  3. Step 3: Cross multiply
    11,621.12x = 17,431.52 × 2,855.95
  4. Step 4: Simplify right side
    11,621.12x = 49,783,491.69
  5. Step 5: Solve for x
    x = 49,783,491.69/11,621.12
  6. Step 6: Final answer
    x = 4,283.88

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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.