Home / 12,684.32-19,028.22-3,919.88

Finding the Fourth Proportional to 12,684.32, 19,028.22 and 3,919.88

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Solution

The fourth proportional to 12,684.32, 19,028.22 and 3,919.88 is: 5,880.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,684.32 : 19,028.22 = 3,919.88 : x
  2. Step 2: Convert to fraction form
    12,684.32/19,028.22 = 3,919.88/x
  3. Step 3: Cross multiply
    12,684.32x = 19,028.22 × 3,919.88
  4. Step 4: Simplify right side
    12,684.32x = 74,588,339.01
  5. Step 5: Solve for x
    x = 74,588,339.01/12,684.32
  6. Step 6: Final answer
    x = 5,880.36

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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.