Home / 11,315.52-16,975.48-3,418.68

Finding the Fourth Proportional to 11,315.52, 16,975.48 and 3,418.68

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Solution

The fourth proportional to 11,315.52, 16,975.48 and 3,418.68 is: 5,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.52 : 16,975.48 = 3,418.68 : x
  2. Step 2: Convert to fraction form
    11,315.52/16,975.48 = 3,418.68/x
  3. Step 3: Cross multiply
    11,315.52x = 16,975.48 × 3,418.68
  4. Step 4: Simplify right side
    11,315.52x = 58,033,733.97
  5. Step 5: Solve for x
    x = 58,033,733.97/11,315.52
  6. Step 6: Final answer
    x = 5,128.68

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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.