Home / 11,245.60-16,875.42-5,408.20

Finding the Fourth Proportional to 11,245.60, 16,875.42 and 5,408.20

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Solution

The fourth proportional to 11,245.60, 16,875.42 and 5,408.20 is: 8,115.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,245.60 : 16,875.42 = 5,408.20 : x
  2. Step 2: Convert to fraction form
    11,245.60/16,875.42 = 5,408.20/x
  3. Step 3: Cross multiply
    11,245.60x = 16,875.42 × 5,408.20
  4. Step 4: Simplify right side
    11,245.60x = 91,265,646.44
  5. Step 5: Solve for x
    x = 91,265,646.44/11,245.60
  6. Step 6: Final answer
    x = 8,115.68

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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.