Home / 20,144.34-30,183.08-12,336.75

Finding the Fourth Proportional to 20,144.34, 30,183.08 and 12,336.75

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Solution

The fourth proportional to 20,144.34, 30,183.08 and 12,336.75 is: 18,484.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.34 : 30,183.08 = 12,336.75 : x
  2. Step 2: Convert to fraction form
    20,144.34/30,183.08 = 12,336.75/x
  3. Step 3: Cross multiply
    20,144.34x = 30,183.08 × 12,336.75
  4. Step 4: Simplify right side
    20,144.34x = 372,361,050.51
  5. Step 5: Solve for x
    x = 372,361,050.51/20,144.34
  6. Step 6: Final answer
    x = 18,484.65

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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.