Home / 13,604.57-20,405.89-3,609.09

Finding the Fourth Proportional to 13,604.57, 20,405.89 and 3,609.09

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Solution

The fourth proportional to 13,604.57, 20,405.89 and 3,609.09 is: 5,413.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.57 : 20,405.89 = 3,609.09 : x
  2. Step 2: Convert to fraction form
    13,604.57/20,405.89 = 3,609.09/x
  3. Step 3: Cross multiply
    13,604.57x = 20,405.89 × 3,609.09
  4. Step 4: Simplify right side
    13,604.57x = 73,646,693.54
  5. Step 5: Solve for x
    x = 73,646,693.54/13,604.57
  6. Step 6: Final answer
    x = 5,413.38

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1.5x scale

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.