Home / 13,738.88-20,609.40-5,418.32

Finding the Fourth Proportional to 13,738.88, 20,609.40 and 5,418.32

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Solution

The fourth proportional to 13,738.88, 20,609.40 and 5,418.32 is: 8,127.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.88 : 20,609.40 = 5,418.32 : x
  2. Step 2: Convert to fraction form
    13,738.88/20,609.40 = 5,418.32/x
  3. Step 3: Cross multiply
    13,738.88x = 20,609.40 × 5,418.32
  4. Step 4: Simplify right side
    13,738.88x = 111,668,324.21
  5. Step 5: Solve for x
    x = 111,668,324.21/13,738.88
  6. Step 6: Final answer
    x = 8,127.91

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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.