Home / 13,185.80-19,781.33-4,865.85

Finding the Fourth Proportional to 13,185.80, 19,781.33 and 4,865.85

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Solution

The fourth proportional to 13,185.80, 19,781.33 and 4,865.85 is: 7,299.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.80 : 19,781.33 = 4,865.85 : x
  2. Step 2: Convert to fraction form
    13,185.80/19,781.33 = 4,865.85/x
  3. Step 3: Cross multiply
    13,185.80x = 19,781.33 × 4,865.85
  4. Step 4: Simplify right side
    13,185.80x = 96,252,960.25
  5. Step 5: Solve for x
    x = 96,252,960.25/13,185.80
  6. Step 6: Final answer
    x = 7,299.75

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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.