Home / 11,315.65-16,976.54-3,418.42

Finding the Fourth Proportional to 11,315.65, 16,976.54 and 3,418.42

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Solution

The fourth proportional to 11,315.65, 16,976.54 and 3,418.42 is: 5,128.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.65 : 16,976.54 = 3,418.42 : x
  2. Step 2: Convert to fraction form
    11,315.65/16,976.54 = 3,418.42/x
  3. Step 3: Cross multiply
    11,315.65x = 16,976.54 × 3,418.42
  4. Step 4: Simplify right side
    11,315.65x = 58,032,958.38
  5. Step 5: Solve for x
    x = 58,032,958.38/11,315.65
  6. Step 6: Final answer
    x = 5,128.56

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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.