Home / 21,408.11-32,121.33-8,269.70

Finding the Fourth Proportional to 21,408.11, 32,121.33 and 8,269.70

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Solution

The fourth proportional to 21,408.11, 32,121.33 and 8,269.70 is: 12,408.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.11 : 32,121.33 = 8,269.70 : x
  2. Step 2: Convert to fraction form
    21,408.11/32,121.33 = 8,269.70/x
  3. Step 3: Cross multiply
    21,408.11x = 32,121.33 × 8,269.70
  4. Step 4: Simplify right side
    21,408.11x = 265,633,602.09
  5. Step 5: Solve for x
    x = 265,633,602.09/21,408.11
  6. Step 6: Final answer
    x = 12,408.09

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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.