Home / 13,618.62-20,425.49-3,623.42

Finding the Fourth Proportional to 13,618.62, 20,425.49 and 3,623.42

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Solution

The fourth proportional to 13,618.62, 20,425.49 and 3,623.42 is: 5,434.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.62 : 20,425.49 = 3,623.42 : x
  2. Step 2: Convert to fraction form
    13,618.62/20,425.49 = 3,623.42/x
  3. Step 3: Cross multiply
    13,618.62x = 20,425.49 × 3,623.42
  4. Step 4: Simplify right side
    13,618.62x = 74,010,128.98
  5. Step 5: Solve for x
    x = 74,010,128.98/13,618.62
  6. Step 6: Final answer
    x = 5,434.48

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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.