Home / 11,691.29-16,133.85-6,386.09

Finding the Fourth Proportional to 11,691.29, 16,133.85 and 6,386.09

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Solution

The fourth proportional to 11,691.29, 16,133.85 and 6,386.09 is: 8,812.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.29 : 16,133.85 = 6,386.09 : x
  2. Step 2: Convert to fraction form
    11,691.29/16,133.85 = 6,386.09/x
  3. Step 3: Cross multiply
    11,691.29x = 16,133.85 × 6,386.09
  4. Step 4: Simplify right side
    11,691.29x = 103,032,218.15
  5. Step 5: Solve for x
    x = 103,032,218.15/11,691.29
  6. Step 6: Final answer
    x = 8,812.73

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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.