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Finding the Fourth Proportional to 21,662.63, 29,894.43 and 12,102.52

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Solution

The fourth proportional to 21,662.63, 29,894.43 and 12,102.52 is: 16,701.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,662.63 : 29,894.43 = 12,102.52 : x
  2. Step 2: Convert to fraction form
    21,662.63/29,894.43 = 12,102.52/x
  3. Step 3: Cross multiply
    21,662.63x = 29,894.43 × 12,102.52
  4. Step 4: Simplify right side
    21,662.63x = 361,797,936.96
  5. Step 5: Solve for x
    x = 361,797,936.96/21,662.63
  6. Step 6: Final answer
    x = 16,701.48

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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.