Home / 11,820.11-16,311.78-6,514.80

Finding the Fourth Proportional to 11,820.11, 16,311.78 and 6,514.80

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Solution

The fourth proportional to 11,820.11, 16,311.78 and 6,514.80 is: 8,990.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.11 : 16,311.78 = 6,514.80 : x
  2. Step 2: Convert to fraction form
    11,820.11/16,311.78 = 6,514.80/x
  3. Step 3: Cross multiply
    11,820.11x = 16,311.78 × 6,514.80
  4. Step 4: Simplify right side
    11,820.11x = 106,267,984.34
  5. Step 5: Solve for x
    x = 106,267,984.34/11,820.11
  6. Step 6: Final answer
    x = 8,990.44

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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.