Home / 10,979.60-16,469.34-4,405.70

Finding the Fourth Proportional to 10,979.60, 16,469.34 and 4,405.70

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Solution

The fourth proportional to 10,979.60, 16,469.34 and 4,405.70 is: 6,608.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.60 : 16,469.34 = 4,405.70 : x
  2. Step 2: Convert to fraction form
    10,979.60/16,469.34 = 4,405.70/x
  3. Step 3: Cross multiply
    10,979.60x = 16,469.34 × 4,405.70
  4. Step 4: Simplify right side
    10,979.60x = 72,558,971.24
  5. Step 5: Solve for x
    x = 72,558,971.24/10,979.60
  6. Step 6: Final answer
    x = 6,608.53

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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.