Home / 14,388.80-21,589.92-5,621.44

Finding the Fourth Proportional to 14,388.80, 21,589.92 and 5,621.44

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Solution

The fourth proportional to 14,388.80, 21,589.92 and 5,621.44 is: 8,434.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,388.80 : 21,589.92 = 5,621.44 : x
  2. Step 2: Convert to fraction form
    14,388.80/21,589.92 = 5,621.44/x
  3. Step 3: Cross multiply
    14,388.80x = 21,589.92 × 5,621.44
  4. Step 4: Simplify right side
    14,388.80x = 121,366,439.88
  5. Step 5: Solve for x
    x = 121,366,439.88/14,388.80
  6. Step 6: Final answer
    x = 8,434.79

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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.