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Finding the Fourth Proportional to 13,642.68, 20,464.02 and 4,408.44

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Solution

The fourth proportional to 13,642.68, 20,464.02 and 4,408.44 is: 6,612.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.68 : 20,464.02 = 4,408.44 : x
  2. Step 2: Convert to fraction form
    13,642.68/20,464.02 = 4,408.44/x
  3. Step 3: Cross multiply
    13,642.68x = 20,464.02 × 4,408.44
  4. Step 4: Simplify right side
    13,642.68x = 90,214,404.33
  5. Step 5: Solve for x
    x = 90,214,404.33/13,642.68
  6. Step 6: Final answer
    x = 6,612.66

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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.