Home / 21,408.20-32,115.03-8,264.33

Finding the Fourth Proportional to 21,408.20, 32,115.03 and 8,264.33

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Solution

The fourth proportional to 21,408.20, 32,115.03 and 8,264.33 is: 12,397.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.20 : 32,115.03 = 8,264.33 : x
  2. Step 2: Convert to fraction form
    21,408.20/32,115.03 = 8,264.33/x
  3. Step 3: Cross multiply
    21,408.20x = 32,115.03 × 8,264.33
  4. Step 4: Simplify right side
    21,408.20x = 265,409,205.88
  5. Step 5: Solve for x
    x = 265,409,205.88/21,408.20
  6. Step 6: Final answer
    x = 12,397.55

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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.