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Finding the Fourth Proportional to 30,353.70, 45,530.55 and 17,231.70

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Solution

The fourth proportional to 30,353.70, 45,530.55 and 17,231.70 is: 25,847.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,353.70 : 45,530.55 = 17,231.70 : x
  2. Step 2: Convert to fraction form
    30,353.70/45,530.55 = 17,231.70/x
  3. Step 3: Cross multiply
    30,353.70x = 45,530.55 × 17,231.70
  4. Step 4: Simplify right side
    30,353.70x = 784,568,778.44
  5. Step 5: Solve for x
    x = 784,568,778.44/30,353.70
  6. Step 6: Final answer
    x = 25,847.55

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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.