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Finding the Fourth Proportional to 20,396.88, 30,604.10 and 11,043.59

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Solution

The fourth proportional to 20,396.88, 30,604.10 and 11,043.59 is: 16,570.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.88 : 30,604.10 = 11,043.59 : x
  2. Step 2: Convert to fraction form
    20,396.88/30,604.10 = 11,043.59/x
  3. Step 3: Cross multiply
    20,396.88x = 30,604.10 × 11,043.59
  4. Step 4: Simplify right side
    20,396.88x = 337,978,924.48
  5. Step 5: Solve for x
    x = 337,978,924.48/20,396.88
  6. Step 6: Final answer
    x = 16,570.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.