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Finding the Fourth Proportional to 20,269.88, 30,404.54 and 6,418.88

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Solution

The fourth proportional to 20,269.88, 30,404.54 and 6,418.88 is: 9,628.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.88 : 30,404.54 = 6,418.88 : x
  2. Step 2: Convert to fraction form
    20,269.88/30,404.54 = 6,418.88/x
  3. Step 3: Cross multiply
    20,269.88x = 30,404.54 × 6,418.88
  4. Step 4: Simplify right side
    20,269.88x = 195,163,093.72
  5. Step 5: Solve for x
    x = 195,163,093.72/20,269.88
  6. Step 6: Final answer
    x = 9,628.23

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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.