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Finding the Fourth Proportional to 11,156, 15,396 and 6,188

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Solution

The fourth proportional to 11,156, 15,396 and 6,188 is: 8,539.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156 : 15,396 = 6,188 : x
  2. Step 2: Convert to fraction form
    11,156/15,396 = 6,188/x
  3. Step 3: Cross multiply
    11,156x = 15,396 × 6,188
  4. Step 4: Simplify right side
    11,156x = 95,270,448
  5. Step 5: Solve for x
    x = 95,270,448/11,156
  6. Step 6: Final answer
    x = 8,539.84

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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.