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Finding the Fourth Proportional to 21,896.91, 32,850.16 and 7,107.32

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Solution

The fourth proportional to 21,896.91, 32,850.16 and 7,107.32 is: 10,662.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,896.91 : 32,850.16 = 7,107.32 : x
  2. Step 2: Convert to fraction form
    21,896.91/32,850.16 = 7,107.32/x
  3. Step 3: Cross multiply
    21,896.91x = 32,850.16 × 7,107.32
  4. Step 4: Simplify right side
    21,896.91x = 233,476,434.92
  5. Step 5: Solve for x
    x = 233,476,434.92/21,896.91
  6. Step 6: Final answer
    x = 10,662.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.