Home / 11,221.28-16,831.93-3,430.03

Finding the Fourth Proportional to 11,221.28, 16,831.93 and 3,430.03

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Solution

The fourth proportional to 11,221.28, 16,831.93 and 3,430.03 is: 5,145.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.28 : 16,831.93 = 3,430.03 : x
  2. Step 2: Convert to fraction form
    11,221.28/16,831.93 = 3,430.03/x
  3. Step 3: Cross multiply
    11,221.28x = 16,831.93 × 3,430.03
  4. Step 4: Simplify right side
    11,221.28x = 57,733,974.20
  5. Step 5: Solve for x
    x = 57,733,974.20/11,221.28
  6. Step 6: Final answer
    x = 5,145.04

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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.