Home / 10,979.67-16,470.05-3,189.09

Finding the Fourth Proportional to 10,979.67, 16,470.05 and 3,189.09

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Solution

The fourth proportional to 10,979.67, 16,470.05 and 3,189.09 is: 4,783.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.67 : 16,470.05 = 3,189.09 : x
  2. Step 2: Convert to fraction form
    10,979.67/16,470.05 = 3,189.09/x
  3. Step 3: Cross multiply
    10,979.67x = 16,470.05 × 3,189.09
  4. Step 4: Simplify right side
    10,979.67x = 52,524,455.81
  5. Step 5: Solve for x
    x = 52,524,455.81/10,979.67
  6. Step 6: Final answer
    x = 4,783.79

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1.5x scale

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.