Home / 11,220.85-16,831.27-3,429.59

Finding the Fourth Proportional to 11,220.85, 16,831.27 and 3,429.59

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Solution

The fourth proportional to 11,220.85, 16,831.27 and 3,429.59 is: 5,144.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.85 : 16,831.27 = 3,429.59 : x
  2. Step 2: Convert to fraction form
    11,220.85/16,831.27 = 3,429.59/x
  3. Step 3: Cross multiply
    11,220.85x = 16,831.27 × 3,429.59
  4. Step 4: Simplify right side
    11,220.85x = 57,724,355.28
  5. Step 5: Solve for x
    x = 57,724,355.28/11,220.85
  6. Step 6: Final answer
    x = 5,144.39

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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.