Home / 13,209.70-18,229.62-7,241.80

Finding the Fourth Proportional to 13,209.70, 18,229.62 and 7,241.80

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Solution

The fourth proportional to 13,209.70, 18,229.62 and 7,241.80 is: 9,993.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.70 : 18,229.62 = 7,241.80 : x
  2. Step 2: Convert to fraction form
    13,209.70/18,229.62 = 7,241.80/x
  3. Step 3: Cross multiply
    13,209.70x = 18,229.62 × 7,241.80
  4. Step 4: Simplify right side
    13,209.70x = 132,015,262.12
  5. Step 5: Solve for x
    x = 132,015,262.12/13,209.70
  6. Step 6: Final answer
    x = 9,993.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.