Home / 35,231.18-48,617.19-20,120.90

Finding the Fourth Proportional to 35,231.18, 48,617.19 and 20,120.90

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Solution

The fourth proportional to 35,231.18, 48,617.19 and 20,120.90 is: 27,765.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,231.18 : 48,617.19 = 20,120.90 : x
  2. Step 2: Convert to fraction form
    35,231.18/48,617.19 = 20,120.90/x
  3. Step 3: Cross multiply
    35,231.18x = 48,617.19 × 20,120.90
  4. Step 4: Simplify right side
    35,231.18x = 978,221,375.19
  5. Step 5: Solve for x
    x = 978,221,375.19/35,231.18
  6. Step 6: Final answer
    x = 27,765.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.