Home / 13,171.26-19,772.28-10,399.80

Finding the Fourth Proportional to 13,171.26, 19,772.28 and 10,399.80

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Solution

The fourth proportional to 13,171.26, 19,772.28 and 10,399.80 is: 15,611.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.26 : 19,772.28 = 10,399.80 : x
  2. Step 2: Convert to fraction form
    13,171.26/19,772.28 = 10,399.80/x
  3. Step 3: Cross multiply
    13,171.26x = 19,772.28 × 10,399.80
  4. Step 4: Simplify right side
    13,171.26x = 205,627,757.54
  5. Step 5: Solve for x
    x = 205,627,757.54/13,171.26
  6. Step 6: Final answer
    x = 15,611.85

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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.