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Finding the Fourth Proportional to 19,244.95, 28,845.01 and 8,147.95

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Solution

The fourth proportional to 19,244.95, 28,845.01 and 8,147.95 is: 12,212.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,244.95 : 28,845.01 = 8,147.95 : x
  2. Step 2: Convert to fraction form
    19,244.95/28,845.01 = 8,147.95/x
  3. Step 3: Cross multiply
    19,244.95x = 28,845.01 × 8,147.95
  4. Step 4: Simplify right side
    19,244.95x = 235,027,699.23
  5. Step 5: Solve for x
    x = 235,027,699.23/19,244.95
  6. Step 6: Final answer
    x = 12,212.43

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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.