Home / 13,599.29-20,379.49-7,743.80

Finding the Fourth Proportional to 13,599.29, 20,379.49 and 7,743.80

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Solution

The fourth proportional to 13,599.29, 20,379.49 and 7,743.80 is: 11,604.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.29 : 20,379.49 = 7,743.80 : x
  2. Step 2: Convert to fraction form
    13,599.29/20,379.49 = 7,743.80/x
  3. Step 3: Cross multiply
    13,599.29x = 20,379.49 × 7,743.80
  4. Step 4: Simplify right side
    13,599.29x = 157,814,573.41
  5. Step 5: Solve for x
    x = 157,814,573.41/13,599.29
  6. Step 6: Final answer
    x = 11,604.62

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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.