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Finding the Fourth Proportional to 19,321.03, 28,992.48 and 8,932.78

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Solution

The fourth proportional to 19,321.03, 28,992.48 and 8,932.78 is: 13,404.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.03 : 28,992.48 = 8,932.78 : x
  2. Step 2: Convert to fraction form
    19,321.03/28,992.48 = 8,932.78/x
  3. Step 3: Cross multiply
    19,321.03x = 28,992.48 × 8,932.78
  4. Step 4: Simplify right side
    19,321.03x = 258,983,498.48
  5. Step 5: Solve for x
    x = 258,983,498.48/19,321.03
  6. Step 6: Final answer
    x = 13,404.23

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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.