Home / 20,324.89-30,480.99-12,002.68

Finding the Fourth Proportional to 20,324.89, 30,480.99 and 12,002.68

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Solution

The fourth proportional to 20,324.89, 30,480.99 and 12,002.68 is: 18,000.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324.89 : 30,480.99 = 12,002.68 : x
  2. Step 2: Convert to fraction form
    20,324.89/30,480.99 = 12,002.68/x
  3. Step 3: Cross multiply
    20,324.89x = 30,480.99 × 12,002.68
  4. Step 4: Simplify right side
    20,324.89x = 365,853,569.05
  5. Step 5: Solve for x
    x = 365,853,569.05/20,324.89
  6. Step 6: Final answer
    x = 18,000.27

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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.