Home / 38,431.11-57,649.11-12,136.89

Finding the Fourth Proportional to 38,431.11, 57,649.11 and 12,136.89

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Solution

The fourth proportional to 38,431.11, 57,649.11 and 12,136.89 is: 18,206.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,431.11 : 57,649.11 = 12,136.89 : x
  2. Step 2: Convert to fraction form
    38,431.11/57,649.11 = 12,136.89/x
  3. Step 3: Cross multiply
    38,431.11x = 57,649.11 × 12,136.89
  4. Step 4: Simplify right side
    38,431.11x = 699,680,906.67
  5. Step 5: Solve for x
    x = 699,680,906.67/38,431.11
  6. Step 6: Final answer
    x = 18,206.11

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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.