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Finding the Fourth Proportional to 19,144.77, 28,687.92 and 8,045.40

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Solution

The fourth proportional to 19,144.77, 28,687.92 and 8,045.40 is: 12,055.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,144.77 : 28,687.92 = 8,045.40 : x
  2. Step 2: Convert to fraction form
    19,144.77/28,687.92 = 8,045.40/x
  3. Step 3: Cross multiply
    19,144.77x = 28,687.92 × 8,045.40
  4. Step 4: Simplify right side
    19,144.77x = 230,805,791.57
  5. Step 5: Solve for x
    x = 230,805,791.57/19,144.77
  6. Step 6: Final answer
    x = 12,055.81

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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.