Home / 20,254.20-30,381.30-12,834.60

Finding the Fourth Proportional to 20,254.20, 30,381.30 and 12,834.60

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Solution

The fourth proportional to 20,254.20, 30,381.30 and 12,834.60 is: 19,251.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,254.20 : 30,381.30 = 12,834.60 : x
  2. Step 2: Convert to fraction form
    20,254.20/30,381.30 = 12,834.60/x
  3. Step 3: Cross multiply
    20,254.20x = 30,381.30 × 12,834.60
  4. Step 4: Simplify right side
    20,254.20x = 389,931,832.98
  5. Step 5: Solve for x
    x = 389,931,832.98/20,254.20
  6. Step 6: Final answer
    x = 19,251.90

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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.