Home / 13,311.76-19,971.54-3,951.80

Finding the Fourth Proportional to 13,311.76, 19,971.54 and 3,951.80

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Solution

The fourth proportional to 13,311.76, 19,971.54 and 3,951.80 is: 5,928.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.76 : 19,971.54 = 3,951.80 : x
  2. Step 2: Convert to fraction form
    13,311.76/19,971.54 = 3,951.80/x
  3. Step 3: Cross multiply
    13,311.76x = 19,971.54 × 3,951.80
  4. Step 4: Simplify right side
    13,311.76x = 78,923,531.77
  5. Step 5: Solve for x
    x = 78,923,531.77/13,311.76
  6. Step 6: Final answer
    x = 5,928.86

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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.