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Finding the Fourth Proportional to 21,797.63, 30,080.73 and 11,861.63

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Solution

The fourth proportional to 21,797.63, 30,080.73 and 11,861.63 is: 16,369.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,797.63 : 30,080.73 = 11,861.63 : x
  2. Step 2: Convert to fraction form
    21,797.63/30,080.73 = 11,861.63/x
  3. Step 3: Cross multiply
    21,797.63x = 30,080.73 × 11,861.63
  4. Step 4: Simplify right side
    21,797.63x = 356,806,338.99
  5. Step 5: Solve for x
    x = 356,806,338.99/21,797.63
  6. Step 6: Final answer
    x = 16,369.05

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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.