Home / 11,820.09-16,311.69-6,514.91

Finding the Fourth Proportional to 11,820.09, 16,311.69 and 6,514.91

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Solution

The fourth proportional to 11,820.09, 16,311.69 and 6,514.91 is: 8,990.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.09 : 16,311.69 = 6,514.91 : x
  2. Step 2: Convert to fraction form
    11,820.09/16,311.69 = 6,514.91/x
  3. Step 3: Cross multiply
    11,820.09x = 16,311.69 × 6,514.91
  4. Step 4: Simplify right side
    11,820.09x = 106,269,192.30
  5. Step 5: Solve for x
    x = 106,269,192.30/11,820.09
  6. Step 6: Final answer
    x = 8,990.56

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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.