Home / 13,418.44-20,128.67-3,557.50

Finding the Fourth Proportional to 13,418.44, 20,128.67 and 3,557.50

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Solution

The fourth proportional to 13,418.44, 20,128.67 and 3,557.50 is: 5,336.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.44 : 20,128.67 = 3,557.50 : x
  2. Step 2: Convert to fraction form
    13,418.44/20,128.67 = 3,557.50/x
  3. Step 3: Cross multiply
    13,418.44x = 20,128.67 × 3,557.50
  4. Step 4: Simplify right side
    13,418.44x = 71,607,743.53
  5. Step 5: Solve for x
    x = 71,607,743.53/13,418.44
  6. Step 6: Final answer
    x = 5,336.52

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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.