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Finding the Fourth Proportional to 19,754.79, 27,253.97 and 12,187.97

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Solution

The fourth proportional to 19,754.79, 27,253.97 and 12,187.97 is: 16,814.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,754.79 : 27,253.97 = 12,187.97 : x
  2. Step 2: Convert to fraction form
    19,754.79/27,253.97 = 12,187.97/x
  3. Step 3: Cross multiply
    19,754.79x = 27,253.97 × 12,187.97
  4. Step 4: Simplify right side
    19,754.79x = 332,170,519.44
  5. Step 5: Solve for x
    x = 332,170,519.44/19,754.79
  6. Step 6: Final answer
    x = 16,814.69

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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.