Home / 20,401.58-30,598.85-5,408.80

Finding the Fourth Proportional to 20,401.58, 30,598.85 and 5,408.80

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Solution

The fourth proportional to 20,401.58, 30,598.85 and 5,408.80 is: 8,112.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.58 : 30,598.85 = 5,408.80 : x
  2. Step 2: Convert to fraction form
    20,401.58/30,598.85 = 5,408.80/x
  3. Step 3: Cross multiply
    20,401.58x = 30,598.85 × 5,408.80
  4. Step 4: Simplify right side
    20,401.58x = 165,503,052.54
  5. Step 5: Solve for x
    x = 165,503,052.54/20,401.58
  6. Step 6: Final answer
    x = 8,112.27

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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.