Home / 11,427.92-17,139.48-3,218

Finding the Fourth Proportional to 11,427.92, 17,139.48 and 3,218

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Solution

The fourth proportional to 11,427.92, 17,139.48 and 3,218 is: 4,826.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,427.92 : 17,139.48 = 3,218 : x
  2. Step 2: Convert to fraction form
    11,427.92/17,139.48 = 3,218/x
  3. Step 3: Cross multiply
    11,427.92x = 17,139.48 × 3,218
  4. Step 4: Simplify right side
    11,427.92x = 55,154,846.64
  5. Step 5: Solve for x
    x = 55,154,846.64/11,427.92
  6. Step 6: Final answer
    x = 4,826.32

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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.