Home / 13,418.19-20,120.79-5,624.91

Finding the Fourth Proportional to 13,418.19, 20,120.79 and 5,624.91

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Solution

The fourth proportional to 13,418.19, 20,120.79 and 5,624.91 is: 8,434.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.19 : 20,120.79 = 5,624.91 : x
  2. Step 2: Convert to fraction form
    13,418.19/20,120.79 = 5,624.91/x
  3. Step 3: Cross multiply
    13,418.19x = 20,120.79 × 5,624.91
  4. Step 4: Simplify right side
    13,418.19x = 113,177,632.88
  5. Step 5: Solve for x
    x = 113,177,632.88/13,418.19
  6. Step 6: Final answer
    x = 8,434.64

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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.