Home / 20,234.20-30,336.90-7,749.40

Finding the Fourth Proportional to 20,234.20, 30,336.90 and 7,749.40

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Solution

The fourth proportional to 20,234.20, 30,336.90 and 7,749.40 is: 11,618.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.20 : 30,336.90 = 7,749.40 : x
  2. Step 2: Convert to fraction form
    20,234.20/30,336.90 = 7,749.40/x
  3. Step 3: Cross multiply
    20,234.20x = 30,336.90 × 7,749.40
  4. Step 4: Simplify right side
    20,234.20x = 235,092,772.86
  5. Step 5: Solve for x
    x = 235,092,772.86/20,234.20
  6. Step 6: Final answer
    x = 11,618.59

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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.