Home / 11,621.13-17,431.55-2,856.12

Finding the Fourth Proportional to 11,621.13, 17,431.55 and 2,856.12

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Solution

The fourth proportional to 11,621.13, 17,431.55 and 2,856.12 is: 4,284.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.13 : 17,431.55 = 2,856.12 : x
  2. Step 2: Convert to fraction form
    11,621.13/17,431.55 = 2,856.12/x
  3. Step 3: Cross multiply
    11,621.13x = 17,431.55 × 2,856.12
  4. Step 4: Simplify right side
    11,621.13x = 49,786,584.31
  5. Step 5: Solve for x
    x = 49,786,584.31/11,621.13
  6. Step 6: Final answer
    x = 4,284.14

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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.