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Finding the Fourth Proportional to 16,990.89, 25,485.49 and 8,099.75

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Solution

The fourth proportional to 16,990.89, 25,485.49 and 8,099.75 is: 12,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,990.89 : 25,485.49 = 8,099.75 : x
  2. Step 2: Convert to fraction form
    16,990.89/25,485.49 = 8,099.75/x
  3. Step 3: Cross multiply
    16,990.89x = 25,485.49 × 8,099.75
  4. Step 4: Simplify right side
    16,990.89x = 206,426,097.63
  5. Step 5: Solve for x
    x = 206,426,097.63/16,990.89
  6. Step 6: Final answer
    x = 12,149.22

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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.