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Finding the Fourth Proportional to 19,171.94, 28,769.86 and 7,326.77

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Solution

The fourth proportional to 19,171.94, 28,769.86 and 7,326.77 is: 10,994.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,171.94 : 28,769.86 = 7,326.77 : x
  2. Step 2: Convert to fraction form
    19,171.94/28,769.86 = 7,326.77/x
  3. Step 3: Cross multiply
    19,171.94x = 28,769.86 × 7,326.77
  4. Step 4: Simplify right side
    19,171.94x = 210,790,147.15
  5. Step 5: Solve for x
    x = 210,790,147.15/19,171.94
  6. Step 6: Final answer
    x = 10,994.72

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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.