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Finding the Fourth Proportional to 12,809.80, 19,218.30 and 4,044.52

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Solution

The fourth proportional to 12,809.80, 19,218.30 and 4,044.52 is: 6,067.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.80 : 19,218.30 = 4,044.52 : x
  2. Step 2: Convert to fraction form
    12,809.80/19,218.30 = 4,044.52/x
  3. Step 3: Cross multiply
    12,809.80x = 19,218.30 × 4,044.52
  4. Step 4: Simplify right side
    12,809.80x = 77,728,798.72
  5. Step 5: Solve for x
    x = 77,728,798.72/12,809.80
  6. Step 6: Final answer
    x = 6,067.92

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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.