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Finding the Fourth Proportional to 11,912.92, 16,439.06 and 6,607.38

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Solution

The fourth proportional to 11,912.92, 16,439.06 and 6,607.38 is: 9,117.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.92 : 16,439.06 = 6,607.38 : x
  2. Step 2: Convert to fraction form
    11,912.92/16,439.06 = 6,607.38/x
  3. Step 3: Cross multiply
    11,912.92x = 16,439.06 × 6,607.38
  4. Step 4: Simplify right side
    11,912.92x = 108,619,116.26
  5. Step 5: Solve for x
    x = 108,619,116.26/11,912.92
  6. Step 6: Final answer
    x = 9,117.76

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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.