Home / 11,691.66-16,135.14-6,386.96

Finding the Fourth Proportional to 11,691.66, 16,135.14 and 6,386.96

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Solution

The fourth proportional to 11,691.66, 16,135.14 and 6,386.96 is: 8,814.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.66 : 16,135.14 = 6,386.96 : x
  2. Step 2: Convert to fraction form
    11,691.66/16,135.14 = 6,386.96/x
  3. Step 3: Cross multiply
    11,691.66x = 16,135.14 × 6,386.96
  4. Step 4: Simplify right side
    11,691.66x = 103,054,493.77
  5. Step 5: Solve for x
    x = 103,054,493.77/11,691.66
  6. Step 6: Final answer
    x = 8,814.36

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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.