Home / 11,221.68-16,831.90-3,429.88

Finding the Fourth Proportional to 11,221.68, 16,831.90 and 3,429.88

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Solution

The fourth proportional to 11,221.68, 16,831.90 and 3,429.88 is: 5,144.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.68 : 16,831.90 = 3,429.88 : x
  2. Step 2: Convert to fraction form
    11,221.68/16,831.90 = 3,429.88/x
  3. Step 3: Cross multiply
    11,221.68x = 16,831.90 × 3,429.88
  4. Step 4: Simplify right side
    11,221.68x = 57,731,397.17
  5. Step 5: Solve for x
    x = 57,731,397.17/11,221.68
  6. Step 6: Final answer
    x = 5,144.63

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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.