Home / 12,684.22-19,028.15-3,919.90

Finding the Fourth Proportional to 12,684.22, 19,028.15 and 3,919.90

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Solution

The fourth proportional to 12,684.22, 19,028.15 and 3,919.90 is: 5,880.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,684.22 : 19,028.15 = 3,919.90 : x
  2. Step 2: Convert to fraction form
    12,684.22/19,028.15 = 3,919.90/x
  3. Step 3: Cross multiply
    12,684.22x = 19,028.15 × 3,919.90
  4. Step 4: Simplify right side
    12,684.22x = 74,588,445.19
  5. Step 5: Solve for x
    x = 74,588,445.19/12,684.22
  6. Step 6: Final answer
    x = 5,880.41

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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.