Home / 20,481.23-30,727.21-6,440.69

Finding the Fourth Proportional to 20,481.23, 30,727.21 and 6,440.69

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Solution

The fourth proportional to 20,481.23, 30,727.21 and 6,440.69 is: 9,662.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.23 : 30,727.21 = 6,440.69 : x
  2. Step 2: Convert to fraction form
    20,481.23/30,727.21 = 6,440.69/x
  3. Step 3: Cross multiply
    20,481.23x = 30,727.21 × 6,440.69
  4. Step 4: Simplify right side
    20,481.23x = 197,904,434.17
  5. Step 5: Solve for x
    x = 197,904,434.17/20,481.23
  6. Step 6: Final answer
    x = 9,662.72

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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.