Home / 11,220.72-16,831.08-3,428.52

Finding the Fourth Proportional to 11,220.72, 16,831.08 and 3,428.52

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Solution

The fourth proportional to 11,220.72, 16,831.08 and 3,428.52 is: 5,142.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.72 : 16,831.08 = 3,428.52 : x
  2. Step 2: Convert to fraction form
    11,220.72/16,831.08 = 3,428.52/x
  3. Step 3: Cross multiply
    11,220.72x = 16,831.08 × 3,428.52
  4. Step 4: Simplify right side
    11,220.72x = 57,705,694.40
  5. Step 5: Solve for x
    x = 57,705,694.40/11,220.72
  6. Step 6: Final answer
    x = 5,142.78

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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.