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Finding the Fourth Proportional to 30,369.68, 45,555.60 and 8,183.60

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Solution

The fourth proportional to 30,369.68, 45,555.60 and 8,183.60 is: 12,275.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,369.68 : 45,555.60 = 8,183.60 : x
  2. Step 2: Convert to fraction form
    30,369.68/45,555.60 = 8,183.60/x
  3. Step 3: Cross multiply
    30,369.68x = 45,555.60 × 8,183.60
  4. Step 4: Simplify right side
    30,369.68x = 372,808,735.87
  5. Step 5: Solve for x
    x = 372,808,735.87/30,369.68
  6. Step 6: Final answer
    x = 12,275.69

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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.