Home / 30,163.48-45,245.32-12,621

Finding the Fourth Proportional to 30,163.48, 45,245.32 and 12,621

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Solution

The fourth proportional to 30,163.48, 45,245.32 and 12,621 is: 18,931.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,163.48 : 45,245.32 = 12,621 : x
  2. Step 2: Convert to fraction form
    30,163.48/45,245.32 = 12,621/x
  3. Step 3: Cross multiply
    30,163.48x = 45,245.32 × 12,621
  4. Step 4: Simplify right side
    30,163.48x = 571,041,183.72
  5. Step 5: Solve for x
    x = 571,041,183.72/30,163.48
  6. Step 6: Final answer
    x = 18,931.54

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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.