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Finding the Fourth Proportional to 21,652.89, 29,880.41 and 12,092.51

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Solution

The fourth proportional to 21,652.89, 29,880.41 and 12,092.51 is: 16,687.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,652.89 : 29,880.41 = 12,092.51 : x
  2. Step 2: Convert to fraction form
    21,652.89/29,880.41 = 12,092.51/x
  3. Step 3: Cross multiply
    21,652.89x = 29,880.41 × 12,092.51
  4. Step 4: Simplify right side
    21,652.89x = 361,329,156.73
  5. Step 5: Solve for x
    x = 361,329,156.73/21,652.89
  6. Step 6: Final answer
    x = 16,687.34

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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.