Home / 11,765.09-16,237.11-6,729.78

Finding the Fourth Proportional to 11,765.09, 16,237.11 and 6,729.78

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Solution

The fourth proportional to 11,765.09, 16,237.11 and 6,729.78 is: 9,287.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,765.09 : 16,237.11 = 6,729.78 : x
  2. Step 2: Convert to fraction form
    11,765.09/16,237.11 = 6,729.78/x
  3. Step 3: Cross multiply
    11,765.09x = 16,237.11 × 6,729.78
  4. Step 4: Simplify right side
    11,765.09x = 109,272,178.14
  5. Step 5: Solve for x
    x = 109,272,178.14/11,765.09
  6. Step 6: Final answer
    x = 9,287.83

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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.