Home / 20,213.52-30,311.10-8,520.36

Finding the Fourth Proportional to 20,213.52, 30,311.10 and 8,520.36

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Solution

The fourth proportional to 20,213.52, 30,311.10 and 8,520.36 is: 12,776.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.52 : 30,311.10 = 8,520.36 : x
  2. Step 2: Convert to fraction form
    20,213.52/30,311.10 = 8,520.36/x
  3. Step 3: Cross multiply
    20,213.52x = 30,311.10 × 8,520.36
  4. Step 4: Simplify right side
    20,213.52x = 258,261,484.00
  5. Step 5: Solve for x
    x = 258,261,484.00/20,213.52
  6. Step 6: Final answer
    x = 12,776.67

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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.