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Finding the Fourth Proportional to 20,604.70, 30,893.39 and 7,455.36

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Solution

The fourth proportional to 20,604.70, 30,893.39 and 7,455.36 is: 11,178.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.70 : 30,893.39 = 7,455.36 : x
  2. Step 2: Convert to fraction form
    20,604.70/30,893.39 = 7,455.36/x
  3. Step 3: Cross multiply
    20,604.70x = 30,893.39 × 7,455.36
  4. Step 4: Simplify right side
    20,604.70x = 230,321,344.07
  5. Step 5: Solve for x
    x = 230,321,344.07/20,604.70
  6. Step 6: Final answer
    x = 11,178.10

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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.