Home / 13,615.50-20,431.31-7,375.37

Finding the Fourth Proportional to 13,615.50, 20,431.31 and 7,375.37

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Solution

The fourth proportional to 13,615.50, 20,431.31 and 7,375.37 is: 11,067.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.50 : 20,431.31 = 7,375.37 : x
  2. Step 2: Convert to fraction form
    13,615.50/20,431.31 = 7,375.37/x
  3. Step 3: Cross multiply
    13,615.50x = 20,431.31 × 7,375.37
  4. Step 4: Simplify right side
    13,615.50x = 150,688,331.80
  5. Step 5: Solve for x
    x = 150,688,331.80/13,615.50
  6. Step 6: Final answer
    x = 11,067.41

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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.