Home / 11,311.62-16,938.18-7,812.42

Finding the Fourth Proportional to 11,311.62, 16,938.18 and 7,812.42

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Solution

The fourth proportional to 11,311.62, 16,938.18 and 7,812.42 is: 11,698.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,311.62 : 16,938.18 = 7,812.42 : x
  2. Step 2: Convert to fraction form
    11,311.62/16,938.18 = 7,812.42/x
  3. Step 3: Cross multiply
    11,311.62x = 16,938.18 × 7,812.42
  4. Step 4: Simplify right side
    11,311.62x = 132,328,176.20
  5. Step 5: Solve for x
    x = 132,328,176.20/11,311.62
  6. Step 6: Final answer
    x = 11,698.43

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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.