Home / 20,611.37-30,896.29-8,126.57

Finding the Fourth Proportional to 20,611.37, 30,896.29 and 8,126.57

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Solution

The fourth proportional to 20,611.37, 30,896.29 and 8,126.57 is: 12,181.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.37 : 30,896.29 = 8,126.57 : x
  2. Step 2: Convert to fraction form
    20,611.37/30,896.29 = 8,126.57/x
  3. Step 3: Cross multiply
    20,611.37x = 30,896.29 × 8,126.57
  4. Step 4: Simplify right side
    20,611.37x = 251,080,863.43
  5. Step 5: Solve for x
    x = 251,080,863.43/20,611.37
  6. Step 6: Final answer
    x = 12,181.67

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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.