Home / 11,220.75-16,831.80-3,429.63

Finding the Fourth Proportional to 11,220.75, 16,831.80 and 3,429.63

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Solution

The fourth proportional to 11,220.75, 16,831.80 and 3,429.63 is: 5,144.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.75 : 16,831.80 = 3,429.63 : x
  2. Step 2: Convert to fraction form
    11,220.75/16,831.80 = 3,429.63/x
  3. Step 3: Cross multiply
    11,220.75x = 16,831.80 × 3,429.63
  4. Step 4: Simplify right side
    11,220.75x = 57,726,846.23
  5. Step 5: Solve for x
    x = 57,726,846.23/11,220.75
  6. Step 6: Final answer
    x = 5,144.65

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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.