Home / 11,691.08-16,133.72-6,386

Finding the Fourth Proportional to 11,691.08, 16,133.72 and 6,386

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Solution

The fourth proportional to 11,691.08, 16,133.72 and 6,386 is: 8,812.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.08 : 16,133.72 = 6,386 : x
  2. Step 2: Convert to fraction form
    11,691.08/16,133.72 = 6,386/x
  3. Step 3: Cross multiply
    11,691.08x = 16,133.72 × 6,386
  4. Step 4: Simplify right side
    11,691.08x = 103,029,935.92
  5. Step 5: Solve for x
    x = 103,029,935.92/11,691.08
  6. Step 6: Final answer
    x = 8,812.70

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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.