Home / 13,635.37-20,453.10-4,147.78

Finding the Fourth Proportional to 13,635.37, 20,453.10 and 4,147.78

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Solution

The fourth proportional to 13,635.37, 20,453.10 and 4,147.78 is: 6,221.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.37 : 20,453.10 = 4,147.78 : x
  2. Step 2: Convert to fraction form
    13,635.37/20,453.10 = 4,147.78/x
  3. Step 3: Cross multiply
    13,635.37x = 20,453.10 × 4,147.78
  4. Step 4: Simplify right side
    13,635.37x = 84,834,856.85
  5. Step 5: Solve for x
    x = 84,834,856.85/13,635.37
  6. Step 6: Final answer
    x = 6,221.68

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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.