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Finding the Fourth Proportional to 21,251.14, 29,324.49 and 11,819.14

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Solution

The fourth proportional to 21,251.14, 29,324.49 and 11,819.14 is: 16,309.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.14 : 29,324.49 = 11,819.14 : x
  2. Step 2: Convert to fraction form
    21,251.14/29,324.49 = 11,819.14/x
  3. Step 3: Cross multiply
    21,251.14x = 29,324.49 × 11,819.14
  4. Step 4: Simplify right side
    21,251.14x = 346,590,252.74
  5. Step 5: Solve for x
    x = 346,590,252.74/21,251.14
  6. Step 6: Final answer
    x = 16,309.25

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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.