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Finding the Fourth Proportional to 18,251.43, 27,392.54 and 7,165.91

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Solution

The fourth proportional to 18,251.43, 27,392.54 and 7,165.91 is: 10,754.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,251.43 : 27,392.54 = 7,165.91 : x
  2. Step 2: Convert to fraction form
    18,251.43/27,392.54 = 7,165.91/x
  3. Step 3: Cross multiply
    18,251.43x = 27,392.54 × 7,165.91
  4. Step 4: Simplify right side
    18,251.43x = 196,292,303.52
  5. Step 5: Solve for x
    x = 196,292,303.52/18,251.43
  6. Step 6: Final answer
    x = 10,754.90

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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.