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Finding the Fourth Proportional to 20,846.63, 28,768.62 and 11,414.99

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Solution

The fourth proportional to 20,846.63, 28,768.62 and 11,414.99 is: 15,752.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,846.63 : 28,768.62 = 11,414.99 : x
  2. Step 2: Convert to fraction form
    20,846.63/28,768.62 = 11,414.99/x
  3. Step 3: Cross multiply
    20,846.63x = 28,768.62 × 11,414.99
  4. Step 4: Simplify right side
    20,846.63x = 328,393,365.77
  5. Step 5: Solve for x
    x = 328,393,365.77/20,846.63
  6. Step 6: Final answer
    x = 15,752.83

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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.