Home / 13,375.78-20,063.77-3,515.04

Finding the Fourth Proportional to 13,375.78, 20,063.77 and 3,515.04

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Solution

The fourth proportional to 13,375.78, 20,063.77 and 3,515.04 is: 5,272.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,375.78 : 20,063.77 = 3,515.04 : x
  2. Step 2: Convert to fraction form
    13,375.78/20,063.77 = 3,515.04/x
  3. Step 3: Cross multiply
    13,375.78x = 20,063.77 × 3,515.04
  4. Step 4: Simplify right side
    13,375.78x = 70,524,945.31
  5. Step 5: Solve for x
    x = 70,524,945.31/13,375.78
  6. Step 6: Final answer
    x = 5,272.59

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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.