Home / 11,820.33-16,311.82-6,442.80

Finding the Fourth Proportional to 11,820.33, 16,311.82 and 6,442.80

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Solution

The fourth proportional to 11,820.33, 16,311.82 and 6,442.80 is: 8,890.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.33 : 16,311.82 = 6,442.80 : x
  2. Step 2: Convert to fraction form
    11,820.33/16,311.82 = 6,442.80/x
  3. Step 3: Cross multiply
    11,820.33x = 16,311.82 × 6,442.80
  4. Step 4: Simplify right side
    11,820.33x = 105,093,793.90
  5. Step 5: Solve for x
    x = 105,093,793.90/11,820.33
  6. Step 6: Final answer
    x = 8,890.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.