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Finding the Fourth Proportional to 17,906.64, 26,859.04 and 5,426.16

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Solution

The fourth proportional to 17,906.64, 26,859.04 and 5,426.16 is: 8,138.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,906.64 : 26,859.04 = 5,426.16 : x
  2. Step 2: Convert to fraction form
    17,906.64/26,859.04 = 5,426.16/x
  3. Step 3: Cross multiply
    17,906.64x = 26,859.04 × 5,426.16
  4. Step 4: Simplify right side
    17,906.64x = 145,741,448.49
  5. Step 5: Solve for x
    x = 145,741,448.49/17,906.64
  6. Step 6: Final answer
    x = 8,138.96

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1.5x scale

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.