Home / 13,919.63-20,880.65-3,531.38

Finding the Fourth Proportional to 13,919.63, 20,880.65 and 3,531.38

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Solution

The fourth proportional to 13,919.63, 20,880.65 and 3,531.38 is: 5,297.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.63 : 20,880.65 = 3,531.38 : x
  2. Step 2: Convert to fraction form
    13,919.63/20,880.65 = 3,531.38/x
  3. Step 3: Cross multiply
    13,919.63x = 20,880.65 × 3,531.38
  4. Step 4: Simplify right side
    13,919.63x = 73,737,414.22
  5. Step 5: Solve for x
    x = 73,737,414.22/13,919.63
  6. Step 6: Final answer
    x = 5,297.37

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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.