Home / 20,234.64-30,351.60-7,751.28

Finding the Fourth Proportional to 20,234.64, 30,351.60 and 7,751.28

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Solution

The fourth proportional to 20,234.64, 30,351.60 and 7,751.28 is: 11,626.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.64 : 30,351.60 = 7,751.28 : x
  2. Step 2: Convert to fraction form
    20,234.64/30,351.60 = 7,751.28/x
  3. Step 3: Cross multiply
    20,234.64x = 30,351.60 × 7,751.28
  4. Step 4: Simplify right side
    20,234.64x = 235,263,750.05
  5. Step 5: Solve for x
    x = 235,263,750.05/20,234.64
  6. Step 6: Final answer
    x = 11,626.78

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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.