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Finding the Fourth Proportional to 21,808.99, 30,097.14 and 12,250.56

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Solution

The fourth proportional to 21,808.99, 30,097.14 and 12,250.56 is: 16,906.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.99 : 30,097.14 = 12,250.56 : x
  2. Step 2: Convert to fraction form
    21,808.99/30,097.14 = 12,250.56/x
  3. Step 3: Cross multiply
    21,808.99x = 30,097.14 × 12,250.56
  4. Step 4: Simplify right side
    21,808.99x = 368,706,819.40
  5. Step 5: Solve for x
    x = 368,706,819.40/21,808.99
  6. Step 6: Final answer
    x = 16,906.19

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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.