Home / 10,781.42-16,174.55-3,285.65

Finding the Fourth Proportional to 10,781.42, 16,174.55 and 3,285.65

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Solution

The fourth proportional to 10,781.42, 16,174.55 and 3,285.65 is: 4,929.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.42 : 16,174.55 = 3,285.65 : x
  2. Step 2: Convert to fraction form
    10,781.42/16,174.55 = 3,285.65/x
  3. Step 3: Cross multiply
    10,781.42x = 16,174.55 × 3,285.65
  4. Step 4: Simplify right side
    10,781.42x = 53,143,812.91
  5. Step 5: Solve for x
    x = 53,143,812.91/10,781.42
  6. Step 6: Final answer
    x = 4,929.21

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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.