Home / 11,219.58-16,831.80-3,428.19

Finding the Fourth Proportional to 11,219.58, 16,831.80 and 3,428.19

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Solution

The fourth proportional to 11,219.58, 16,831.80 and 3,428.19 is: 5,143.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,219.58 : 16,831.80 = 3,428.19 : x
  2. Step 2: Convert to fraction form
    11,219.58/16,831.80 = 3,428.19/x
  3. Step 3: Cross multiply
    11,219.58x = 16,831.80 × 3,428.19
  4. Step 4: Simplify right side
    11,219.58x = 57,702,608.44
  5. Step 5: Solve for x
    x = 57,702,608.44/11,219.58
  6. Step 6: Final answer
    x = 5,143.03

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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.