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Finding the Fourth Proportional to 21,604.99, 29,813.63 and 12,044.56

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Solution

The fourth proportional to 21,604.99, 29,813.63 and 12,044.56 is: 16,620.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,604.99 : 29,813.63 = 12,044.56 : x
  2. Step 2: Convert to fraction form
    21,604.99/29,813.63 = 12,044.56/x
  3. Step 3: Cross multiply
    21,604.99x = 29,813.63 × 12,044.56
  4. Step 4: Simplify right side
    21,604.99x = 359,091,906.28
  5. Step 5: Solve for x
    x = 359,091,906.28/21,604.99
  6. Step 6: Final answer
    x = 16,620.79

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1.5x scale

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.