Home / 20,604.21-28,434.41-11,651.52

Finding the Fourth Proportional to 20,604.21, 28,434.41 and 11,651.52

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Solution

The fourth proportional to 20,604.21, 28,434.41 and 11,651.52 is: 16,079.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.21 : 28,434.41 = 11,651.52 : x
  2. Step 2: Convert to fraction form
    20,604.21/28,434.41 = 11,651.52/x
  3. Step 3: Cross multiply
    20,604.21x = 28,434.41 × 11,651.52
  4. Step 4: Simplify right side
    20,604.21x = 331,304,096.80
  5. Step 5: Solve for x
    x = 331,304,096.80/20,604.21
  6. Step 6: Final answer
    x = 16,079.44

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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.