Home / 11,691.64-16,134.06-6,386.68

Finding the Fourth Proportional to 11,691.64, 16,134.06 and 6,386.68

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Solution

The fourth proportional to 11,691.64, 16,134.06 and 6,386.68 is: 8,813.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.64 : 16,134.06 = 6,386.68 : x
  2. Step 2: Convert to fraction form
    11,691.64/16,134.06 = 6,386.68/x
  3. Step 3: Cross multiply
    11,691.64x = 16,134.06 × 6,386.68
  4. Step 4: Simplify right side
    11,691.64x = 103,043,078.32
  5. Step 5: Solve for x
    x = 103,043,078.32/11,691.64
  6. Step 6: Final answer
    x = 8,813.40

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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.