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Finding the Fourth Proportional to 12,754.68, 19,112.53 and 8,579.24

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Solution

The fourth proportional to 12,754.68, 19,112.53 and 8,579.24 is: 12,855.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,754.68 : 19,112.53 = 8,579.24 : x
  2. Step 2: Convert to fraction form
    12,754.68/19,112.53 = 8,579.24/x
  3. Step 3: Cross multiply
    12,754.68x = 19,112.53 × 8,579.24
  4. Step 4: Simplify right side
    12,754.68x = 163,970,981.88
  5. Step 5: Solve for x
    x = 163,970,981.88/12,754.68
  6. Step 6: Final answer
    x = 12,855.75

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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.