Home / 11,220.88-16,831.20-3,429.76

Finding the Fourth Proportional to 11,220.88, 16,831.20 and 3,429.76

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Solution

The fourth proportional to 11,220.88, 16,831.20 and 3,429.76 is: 5,144.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.88 : 16,831.20 = 3,429.76 : x
  2. Step 2: Convert to fraction form
    11,220.88/16,831.20 = 3,429.76/x
  3. Step 3: Cross multiply
    11,220.88x = 16,831.20 × 3,429.76
  4. Step 4: Simplify right side
    11,220.88x = 57,726,976.51
  5. Step 5: Solve for x
    x = 57,726,976.51/11,220.88
  6. Step 6: Final answer
    x = 5,144.60

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1.5x scale

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.