Home / 11,831.60-17,712.80-7,183.28

Finding the Fourth Proportional to 11,831.60, 17,712.80 and 7,183.28

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Solution

The fourth proportional to 11,831.60, 17,712.80 and 7,183.28 is: 10,753.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,831.60 : 17,712.80 = 7,183.28 : x
  2. Step 2: Convert to fraction form
    11,831.60/17,712.80 = 7,183.28/x
  3. Step 3: Cross multiply
    11,831.60x = 17,712.80 × 7,183.28
  4. Step 4: Simplify right side
    11,831.60x = 127,236,001.98
  5. Step 5: Solve for x
    x = 127,236,001.98/11,831.60
  6. Step 6: Final answer
    x = 10,753.91

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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.