Home / 12,784.39-19,179.20-5,388.85

Finding the Fourth Proportional to 12,784.39, 19,179.20 and 5,388.85

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Solution

The fourth proportional to 12,784.39, 19,179.20 and 5,388.85 is: 8,084.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,784.39 : 19,179.20 = 5,388.85 : x
  2. Step 2: Convert to fraction form
    12,784.39/19,179.20 = 5,388.85/x
  3. Step 3: Cross multiply
    12,784.39x = 19,179.20 × 5,388.85
  4. Step 4: Simplify right side
    12,784.39x = 103,353,831.92
  5. Step 5: Solve for x
    x = 103,353,831.92/12,784.39
  6. Step 6: Final answer
    x = 8,084.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.