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Finding the Fourth Proportional to 18,704.66, 27,995.54 and 14,238.21

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Solution

The fourth proportional to 18,704.66, 27,995.54 and 14,238.21 is: 21,310.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.66 : 27,995.54 = 14,238.21 : x
  2. Step 2: Convert to fraction form
    18,704.66/27,995.54 = 14,238.21/x
  3. Step 3: Cross multiply
    18,704.66x = 27,995.54 × 14,238.21
  4. Step 4: Simplify right side
    18,704.66x = 398,606,306.39
  5. Step 5: Solve for x
    x = 398,606,306.39/18,704.66
  6. Step 6: Final answer
    x = 21,310.54

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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.