Home / 20,408.58-30,613.04-5,618.32

Finding the Fourth Proportional to 20,408.58, 30,613.04 and 5,618.32

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Solution

The fourth proportional to 20,408.58, 30,613.04 and 5,618.32 is: 8,427.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,408.58 : 30,613.04 = 5,618.32 : x
  2. Step 2: Convert to fraction form
    20,408.58/30,613.04 = 5,618.32/x
  3. Step 3: Cross multiply
    20,408.58x = 30,613.04 × 5,618.32
  4. Step 4: Simplify right side
    20,408.58x = 171,993,854.89
  5. Step 5: Solve for x
    x = 171,993,854.89/20,408.58
  6. Step 6: Final answer
    x = 8,427.53

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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.