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Finding the Fourth Proportional to 11,896.92, 16,420.04 and 6,864.39

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Solution

The fourth proportional to 11,896.92, 16,420.04 and 6,864.39 is: 9,474.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,896.92 : 16,420.04 = 6,864.39 : x
  2. Step 2: Convert to fraction form
    11,896.92/16,420.04 = 6,864.39/x
  3. Step 3: Cross multiply
    11,896.92x = 16,420.04 × 6,864.39
  4. Step 4: Simplify right side
    11,896.92x = 112,713,558.38
  5. Step 5: Solve for x
    x = 112,713,558.38/11,896.92
  6. Step 6: Final answer
    x = 9,474.18

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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.