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Finding the Fourth Proportional to 18,288.88, 27,371.88 and 10,486

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Solution

The fourth proportional to 18,288.88, 27,371.88 and 10,486 is: 15,693.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.88 : 27,371.88 = 10,486 : x
  2. Step 2: Convert to fraction form
    18,288.88/27,371.88 = 10,486/x
  3. Step 3: Cross multiply
    18,288.88x = 27,371.88 × 10,486
  4. Step 4: Simplify right side
    18,288.88x = 287,021,533.68
  5. Step 5: Solve for x
    x = 287,021,533.68/18,288.88
  6. Step 6: Final answer
    x = 15,693.77

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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.