Home / 11,729.70-16,186.11-6,693.78

Finding the Fourth Proportional to 11,729.70, 16,186.11 and 6,693.78

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Solution

The fourth proportional to 11,729.70, 16,186.11 and 6,693.78 is: 9,236.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.70 : 16,186.11 = 6,693.78 : x
  2. Step 2: Convert to fraction form
    11,729.70/16,186.11 = 6,693.78/x
  3. Step 3: Cross multiply
    11,729.70x = 16,186.11 × 6,693.78
  4. Step 4: Simplify right side
    11,729.70x = 108,346,259.40
  5. Step 5: Solve for x
    x = 108,346,259.40/11,729.70
  6. Step 6: Final answer
    x = 9,236.92

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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.