Home / 20,618.48-30,944.12-7,474.60

Finding the Fourth Proportional to 20,618.48, 30,944.12 and 7,474.60

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Solution

The fourth proportional to 20,618.48, 30,944.12 and 7,474.60 is: 11,217.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.48 : 30,944.12 = 7,474.60 : x
  2. Step 2: Convert to fraction form
    20,618.48/30,944.12 = 7,474.60/x
  3. Step 3: Cross multiply
    20,618.48x = 30,944.12 × 7,474.60
  4. Step 4: Simplify right side
    20,618.48x = 231,294,919.35
  5. Step 5: Solve for x
    x = 231,294,919.35/20,618.48
  6. Step 6: Final answer
    x = 11,217.85

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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.