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Finding the Fourth Proportional to 18,578.88, 27,867.96 and 4,539

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Solution

The fourth proportional to 18,578.88, 27,867.96 and 4,539 is: 6,808.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578.88 : 27,867.96 = 4,539 : x
  2. Step 2: Convert to fraction form
    18,578.88/27,867.96 = 4,539/x
  3. Step 3: Cross multiply
    18,578.88x = 27,867.96 × 4,539
  4. Step 4: Simplify right side
    18,578.88x = 126,492,670.44
  5. Step 5: Solve for x
    x = 126,492,670.44/18,578.88
  6. Step 6: Final answer
    x = 6,808.41

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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.