Home / 11,691.45-16,134.28-6,386.26

Finding the Fourth Proportional to 11,691.45, 16,134.28 and 6,386.26

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Solution

The fourth proportional to 11,691.45, 16,134.28 and 6,386.26 is: 8,813.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.45 : 16,134.28 = 6,386.26 : x
  2. Step 2: Convert to fraction form
    11,691.45/16,134.28 = 6,386.26/x
  3. Step 3: Cross multiply
    11,691.45x = 16,134.28 × 6,386.26
  4. Step 4: Simplify right side
    11,691.45x = 103,037,735.14
  5. Step 5: Solve for x
    x = 103,037,735.14/11,691.45
  6. Step 6: Final answer
    x = 8,813.09

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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.