Home / 11,685.96-16,126.53-6,380.78

Finding the Fourth Proportional to 11,685.96, 16,126.53 and 6,380.78

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Solution

The fourth proportional to 11,685.96, 16,126.53 and 6,380.78 is: 8,805.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.96 : 16,126.53 = 6,380.78 : x
  2. Step 2: Convert to fraction form
    11,685.96/16,126.53 = 6,380.78/x
  3. Step 3: Cross multiply
    11,685.96x = 16,126.53 × 6,380.78
  4. Step 4: Simplify right side
    11,685.96x = 102,899,759.46
  5. Step 5: Solve for x
    x = 102,899,759.46/11,685.96
  6. Step 6: Final answer
    x = 8,805.42

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Double scale
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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.