Home / 21,408.50-32,115.82-6,618.57

Finding the Fourth Proportional to 21,408.50, 32,115.82 and 6,618.57

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Solution

The fourth proportional to 21,408.50, 32,115.82 and 6,618.57 is: 9,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.50 : 32,115.82 = 6,618.57 : x
  2. Step 2: Convert to fraction form
    21,408.50/32,115.82 = 6,618.57/x
  3. Step 3: Cross multiply
    21,408.50x = 32,115.82 × 6,618.57
  4. Step 4: Simplify right side
    21,408.50x = 212,560,730.76
  5. Step 5: Solve for x
    x = 212,560,730.76/21,408.50
  6. Step 6: Final answer
    x = 9,928.80

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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.