Home / 13,408.96-20,114.88-5,618.56

Finding the Fourth Proportional to 13,408.96, 20,114.88 and 5,618.56

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Solution

The fourth proportional to 13,408.96, 20,114.88 and 5,618.56 is: 8,428.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.96 : 20,114.88 = 5,618.56 : x
  2. Step 2: Convert to fraction form
    13,408.96/20,114.88 = 5,618.56/x
  3. Step 3: Cross multiply
    13,408.96x = 20,114.88 × 5,618.56
  4. Step 4: Simplify right side
    13,408.96x = 113,016,660.17
  5. Step 5: Solve for x
    x = 113,016,660.17/13,408.96
  6. Step 6: Final answer
    x = 8,428.44

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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.