Home / 20,581.80-30,794.70-13,669.80

Finding the Fourth Proportional to 20,581.80, 30,794.70 and 13,669.80

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Solution

The fourth proportional to 20,581.80, 30,794.70 and 13,669.80 is: 20,452.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.80 : 30,794.70 = 13,669.80 : x
  2. Step 2: Convert to fraction form
    20,581.80/30,794.70 = 13,669.80/x
  3. Step 3: Cross multiply
    20,581.80x = 30,794.70 × 13,669.80
  4. Step 4: Simplify right side
    20,581.80x = 420,957,390.06
  5. Step 5: Solve for x
    x = 420,957,390.06/20,581.80
  6. Step 6: Final answer
    x = 20,452.89

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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.