Home / 11,319.45-16,979.18-3,923.91

Finding the Fourth Proportional to 11,319.45, 16,979.18 and 3,923.91

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Solution

The fourth proportional to 11,319.45, 16,979.18 and 3,923.91 is: 5,885.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.45 : 16,979.18 = 3,923.91 : x
  2. Step 2: Convert to fraction form
    11,319.45/16,979.18 = 3,923.91/x
  3. Step 3: Cross multiply
    11,319.45x = 16,979.18 × 3,923.91
  4. Step 4: Simplify right side
    11,319.45x = 66,624,774.19
  5. Step 5: Solve for x
    x = 66,624,774.19/11,319.45
  6. Step 6: Final answer
    x = 5,885.87

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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.