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Finding the Fourth Proportional to 11,685, 16,125.27 and 6,379.82

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Solution

The fourth proportional to 11,685, 16,125.27 and 6,379.82 is: 8,804.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685 : 16,125.27 = 6,379.82 : x
  2. Step 2: Convert to fraction form
    11,685/16,125.27 = 6,379.82/x
  3. Step 3: Cross multiply
    11,685x = 16,125.27 × 6,379.82
  4. Step 4: Simplify right side
    11,685x = 102,876,239.43
  5. Step 5: Solve for x
    x = 102,876,239.43/11,685
  6. Step 6: Final answer
    x = 8,804.13

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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.