Home / 20,605.82-30,910.35-8,124.98

Finding the Fourth Proportional to 20,605.82, 30,910.35 and 8,124.98

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Solution

The fourth proportional to 20,605.82, 30,910.35 and 8,124.98 is: 12,188.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.82 : 30,910.35 = 8,124.98 : x
  2. Step 2: Convert to fraction form
    20,605.82/30,910.35 = 8,124.98/x
  3. Step 3: Cross multiply
    20,605.82x = 30,910.35 × 8,124.98
  4. Step 4: Simplify right side
    20,605.82x = 251,145,975.54
  5. Step 5: Solve for x
    x = 251,145,975.54/20,605.82
  6. Step 6: Final answer
    x = 12,188.11

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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.