Home / 21,408.20-32,115.37-6,618.27

Finding the Fourth Proportional to 21,408.20, 32,115.37 and 6,618.27

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Solution

The fourth proportional to 21,408.20, 32,115.37 and 6,618.27 is: 9,928.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.20 : 32,115.37 = 6,618.27 : x
  2. Step 2: Convert to fraction form
    21,408.20/32,115.37 = 6,618.27/x
  3. Step 3: Cross multiply
    21,408.20x = 32,115.37 × 6,618.27
  4. Step 4: Simplify right side
    21,408.20x = 212,548,198.54
  5. Step 5: Solve for x
    x = 212,548,198.54/21,408.20
  6. Step 6: Final answer
    x = 9,928.36

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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.