Home / 20,234.90-30,352.35-20,105.30

Finding the Fourth Proportional to 20,234.90, 30,352.35 and 20,105.30

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Solution

The fourth proportional to 20,234.90, 30,352.35 and 20,105.30 is: 30,157.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.90 : 30,352.35 = 20,105.30 : x
  2. Step 2: Convert to fraction form
    20,234.90/30,352.35 = 20,105.30/x
  3. Step 3: Cross multiply
    20,234.90x = 30,352.35 × 20,105.30
  4. Step 4: Simplify right side
    20,234.90x = 610,243,102.46
  5. Step 5: Solve for x
    x = 610,243,102.46/20,234.90
  6. Step 6: Final answer
    x = 30,157.95

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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.