Home / 11,691.58-16,134.12-6,386.42

Finding the Fourth Proportional to 11,691.58, 16,134.12 and 6,386.42

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Solution

The fourth proportional to 11,691.58, 16,134.12 and 6,386.42 is: 8,813.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.58 : 16,134.12 = 6,386.42 : x
  2. Step 2: Convert to fraction form
    11,691.58/16,134.12 = 6,386.42/x
  3. Step 3: Cross multiply
    11,691.58x = 16,134.12 × 6,386.42
  4. Step 4: Simplify right side
    11,691.58x = 103,039,246.48
  5. Step 5: Solve for x
    x = 103,039,246.48/11,691.58
  6. Step 6: Final answer
    x = 8,813.11

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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.