Home / 11,691.36-16,134.12-6,386.04

Finding the Fourth Proportional to 11,691.36, 16,134.12 and 6,386.04

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Solution

The fourth proportional to 11,691.36, 16,134.12 and 6,386.04 is: 8,812.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.36 : 16,134.12 = 6,386.04 : x
  2. Step 2: Convert to fraction form
    11,691.36/16,134.12 = 6,386.04/x
  3. Step 3: Cross multiply
    11,691.36x = 16,134.12 × 6,386.04
  4. Step 4: Simplify right side
    11,691.36x = 103,033,135.68
  5. Step 5: Solve for x
    x = 103,033,135.68/11,691.36
  6. Step 6: Final answer
    x = 8,812.76

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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.