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Finding the Fourth Proportional to 19,137.12, 28,497.72 and 19,068

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Solution

The fourth proportional to 19,137.12, 28,497.72 and 19,068 is: 28,394.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,137.12 : 28,497.72 = 19,068 : x
  2. Step 2: Convert to fraction form
    19,137.12/28,497.72 = 19,068/x
  3. Step 3: Cross multiply
    19,137.12x = 28,497.72 × 19,068
  4. Step 4: Simplify right side
    19,137.12x = 543,394,524.96
  5. Step 5: Solve for x
    x = 543,394,524.96/19,137.12
  6. Step 6: Final answer
    x = 28,394.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.