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Finding the Fourth Proportional to 16,990.40, 25,500.18 and 8,231.06

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Solution

The fourth proportional to 16,990.40, 25,500.18 and 8,231.06 is: 12,353.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,990.40 : 25,500.18 = 8,231.06 : x
  2. Step 2: Convert to fraction form
    16,990.40/25,500.18 = 8,231.06/x
  3. Step 3: Cross multiply
    16,990.40x = 25,500.18 × 8,231.06
  4. Step 4: Simplify right side
    16,990.40x = 209,893,511.59
  5. Step 5: Solve for x
    x = 209,893,511.59/16,990.40
  6. Step 6: Final answer
    x = 12,353.65

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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.