Home / 10,979.52-16,469.30-3,188.40

Finding the Fourth Proportional to 10,979.52, 16,469.30 and 3,188.40

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Solution

The fourth proportional to 10,979.52, 16,469.30 and 3,188.40 is: 4,782.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.52 : 16,469.30 = 3,188.40 : x
  2. Step 2: Convert to fraction form
    10,979.52/16,469.30 = 3,188.40/x
  3. Step 3: Cross multiply
    10,979.52x = 16,469.30 × 3,188.40
  4. Step 4: Simplify right side
    10,979.52x = 52,510,716.12
  5. Step 5: Solve for x
    x = 52,510,716.12/10,979.52
  6. Step 6: Final answer
    x = 4,782.61

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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.