Home / 13,240.35-19,861.20-3,379.71

Finding the Fourth Proportional to 13,240.35, 19,861.20 and 3,379.71

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Solution

The fourth proportional to 13,240.35, 19,861.20 and 3,379.71 is: 5,069.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.35 : 19,861.20 = 3,379.71 : x
  2. Step 2: Convert to fraction form
    13,240.35/19,861.20 = 3,379.71/x
  3. Step 3: Cross multiply
    13,240.35x = 19,861.20 × 3,379.71
  4. Step 4: Simplify right side
    13,240.35x = 67,125,105.76
  5. Step 5: Solve for x
    x = 67,125,105.76/13,240.35
  6. Step 6: Final answer
    x = 5,069.74

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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.