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Finding the Fourth Proportional to 18,398.54, 27,571.39 and 10,484.64

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Solution

The fourth proportional to 18,398.54, 27,571.39 and 10,484.64 is: 15,711.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.54 : 27,571.39 = 10,484.64 : x
  2. Step 2: Convert to fraction form
    18,398.54/27,571.39 = 10,484.64/x
  3. Step 3: Cross multiply
    18,398.54x = 27,571.39 × 10,484.64
  4. Step 4: Simplify right side
    18,398.54x = 289,076,072.24
  5. Step 5: Solve for x
    x = 289,076,072.24/18,398.54
  6. Step 6: Final answer
    x = 15,711.90

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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.