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Finding the Fourth Proportional to 11,326, 15,631.32 and 6,358

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Solution

The fourth proportional to 11,326, 15,631.32 and 6,358 is: 8,774.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,326 : 15,631.32 = 6,358 : x
  2. Step 2: Convert to fraction form
    11,326/15,631.32 = 6,358/x
  3. Step 3: Cross multiply
    11,326x = 15,631.32 × 6,358
  4. Step 4: Simplify right side
    11,326x = 99,383,932.56
  5. Step 5: Solve for x
    x = 99,383,932.56/11,326
  6. Step 6: Final answer
    x = 8,774.85

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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.