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Finding the Fourth Proportional to 11,960, 16,505.76 and 6,992.96

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Solution

The fourth proportional to 11,960, 16,505.76 and 6,992.96 is: 9,650.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,960 : 16,505.76 = 6,992.96 : x
  2. Step 2: Convert to fraction form
    11,960/16,505.76 = 6,992.96/x
  3. Step 3: Cross multiply
    11,960x = 16,505.76 × 6,992.96
  4. Step 4: Simplify right side
    11,960x = 115,424,119.45
  5. Step 5: Solve for x
    x = 115,424,119.45/11,960
  6. Step 6: Final answer
    x = 9,650.85

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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.