Home / 20,286.76-30,429.96-5,497.20

Finding the Fourth Proportional to 20,286.76, 30,429.96 and 5,497.20

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Solution

The fourth proportional to 20,286.76, 30,429.96 and 5,497.20 is: 8,245.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.76 : 30,429.96 = 5,497.20 : x
  2. Step 2: Convert to fraction form
    20,286.76/30,429.96 = 5,497.20/x
  3. Step 3: Cross multiply
    20,286.76x = 30,429.96 × 5,497.20
  4. Step 4: Simplify right side
    20,286.76x = 167,279,576.11
  5. Step 5: Solve for x
    x = 167,279,576.11/20,286.76
  6. Step 6: Final answer
    x = 8,245.75

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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.