Home / 13,609.44-20,408.92-5,288.36

Finding the Fourth Proportional to 13,609.44, 20,408.92 and 5,288.36

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Solution

The fourth proportional to 13,609.44, 20,408.92 and 5,288.36 is: 7,930.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.44 : 20,408.92 = 5,288.36 : x
  2. Step 2: Convert to fraction form
    13,609.44/20,408.92 = 5,288.36/x
  3. Step 3: Cross multiply
    13,609.44x = 20,408.92 × 5,288.36
  4. Step 4: Simplify right side
    13,609.44x = 107,929,600.91
  5. Step 5: Solve for x
    x = 107,929,600.91/13,609.44
  6. Step 6: Final answer
    x = 7,930.50

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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.