Home / 13,742.76-20,600.27-5,418.19

Finding the Fourth Proportional to 13,742.76, 20,600.27 and 5,418.19

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Solution

The fourth proportional to 13,742.76, 20,600.27 and 5,418.19 is: 8,121.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.76 : 20,600.27 = 5,418.19 : x
  2. Step 2: Convert to fraction form
    13,742.76/20,600.27 = 5,418.19/x
  3. Step 3: Cross multiply
    13,742.76x = 20,600.27 × 5,418.19
  4. Step 4: Simplify right side
    13,742.76x = 111,616,046.82
  5. Step 5: Solve for x
    x = 111,616,046.82/13,742.76
  6. Step 6: Final answer
    x = 8,121.81

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1.5x scale

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.