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Finding the Fourth Proportional to 21,566.86, 29,759.07 and 12,134.86

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Solution

The fourth proportional to 21,566.86, 29,759.07 and 12,134.86 is: 16,744.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,566.86 : 29,759.07 = 12,134.86 : x
  2. Step 2: Convert to fraction form
    21,566.86/29,759.07 = 12,134.86/x
  3. Step 3: Cross multiply
    21,566.86x = 29,759.07 × 12,134.86
  4. Step 4: Simplify right side
    21,566.86x = 361,122,148.18
  5. Step 5: Solve for x
    x = 361,122,148.18/21,566.86
  6. Step 6: Final answer
    x = 16,744.31

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Why These Related Problems?

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