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Finding the Fourth Proportional to 21,950.91, 30,292.26 and 11,879.35

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Solution

The fourth proportional to 21,950.91, 30,292.26 and 11,879.35 is: 16,393.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,950.91 : 30,292.26 = 11,879.35 : x
  2. Step 2: Convert to fraction form
    21,950.91/30,292.26 = 11,879.35/x
  3. Step 3: Cross multiply
    21,950.91x = 30,292.26 × 11,879.35
  4. Step 4: Simplify right side
    21,950.91x = 359,852,352.15
  5. Step 5: Solve for x
    x = 359,852,352.15/21,950.91
  6. Step 6: Final answer
    x = 16,393.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.