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Finding the Fourth Proportional to 20,450.52, 30,685.44 and 8,606.88

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Solution

The fourth proportional to 20,450.52, 30,685.44 and 8,606.88 is: 12,914.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.52 : 30,685.44 = 8,606.88 : x
  2. Step 2: Convert to fraction form
    20,450.52/30,685.44 = 8,606.88/x
  3. Step 3: Cross multiply
    20,450.52x = 30,685.44 × 8,606.88
  4. Step 4: Simplify right side
    20,450.52x = 264,105,899.83
  5. Step 5: Solve for x
    x = 264,105,899.83/20,450.52
  6. Step 6: Final answer
    x = 12,914.39

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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.