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Finding the Fourth Proportional to 12,554, 18,816.28 and 5,148.56

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Solution

The fourth proportional to 12,554, 18,816.28 and 5,148.56 is: 7,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,554 : 18,816.28 = 5,148.56 : x
  2. Step 2: Convert to fraction form
    12,554/18,816.28 = 5,148.56/x
  3. Step 3: Cross multiply
    12,554x = 18,816.28 × 5,148.56
  4. Step 4: Simplify right side
    12,554x = 96,876,746.56
  5. Step 5: Solve for x
    x = 96,876,746.56/12,554
  6. Step 6: Final answer
    x = 7,716.80

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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.