Home / 21,283.92-31,926.18-8,136.96

Finding the Fourth Proportional to 21,283.92, 31,926.18 and 8,136.96

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Solution

The fourth proportional to 21,283.92, 31,926.18 and 8,136.96 is: 12,205.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.92 : 31,926.18 = 8,136.96 : x
  2. Step 2: Convert to fraction form
    21,283.92/31,926.18 = 8,136.96/x
  3. Step 3: Cross multiply
    21,283.92x = 31,926.18 × 8,136.96
  4. Step 4: Simplify right side
    21,283.92x = 259,782,049.61
  5. Step 5: Solve for x
    x = 259,782,049.61/21,283.92
  6. Step 6: Final answer
    x = 12,205.55

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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.