Home / 20,144.88-30,226.92-12,349.20

Finding the Fourth Proportional to 20,144.88, 30,226.92 and 12,349.20

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Solution

The fourth proportional to 20,144.88, 30,226.92 and 12,349.20 is: 18,529.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.88 : 30,226.92 = 12,349.20 : x
  2. Step 2: Convert to fraction form
    20,144.88/30,226.92 = 12,349.20/x
  3. Step 3: Cross multiply
    20,144.88x = 30,226.92 × 12,349.20
  4. Step 4: Simplify right side
    20,144.88x = 373,278,280.46
  5. Step 5: Solve for x
    x = 373,278,280.46/20,144.88
  6. Step 6: Final answer
    x = 18,529.68

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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.