Home / 13,661.28-20,524.73-8,740.53

Finding the Fourth Proportional to 13,661.28, 20,524.73 and 8,740.53

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Solution

The fourth proportional to 13,661.28, 20,524.73 and 8,740.53 is: 13,131.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.28 : 20,524.73 = 8,740.53 : x
  2. Step 2: Convert to fraction form
    13,661.28/20,524.73 = 8,740.53/x
  3. Step 3: Cross multiply
    13,661.28x = 20,524.73 × 8,740.53
  4. Step 4: Simplify right side
    13,661.28x = 179,396,974.60
  5. Step 5: Solve for x
    x = 179,396,974.60/13,661.28
  6. Step 6: Final answer
    x = 13,131.78

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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.