Home / 20,831.23-31,251.53-6,600.56

Finding the Fourth Proportional to 20,831.23, 31,251.53 and 6,600.56

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Solution

The fourth proportional to 20,831.23, 31,251.53 and 6,600.56 is: 9,902.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.23 : 31,251.53 = 6,600.56 : x
  2. Step 2: Convert to fraction form
    20,831.23/31,251.53 = 6,600.56/x
  3. Step 3: Cross multiply
    20,831.23x = 31,251.53 × 6,600.56
  4. Step 4: Simplify right side
    20,831.23x = 206,277,409.60
  5. Step 5: Solve for x
    x = 206,277,409.60/20,831.23
  6. Step 6: Final answer
    x = 9,902.32

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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.