Home / 20,557.43-30,845.54-11,183.40

Finding the Fourth Proportional to 20,557.43, 30,845.54 and 11,183.40

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Solution

The fourth proportional to 20,557.43, 30,845.54 and 11,183.40 is: 16,780.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.43 : 30,845.54 = 11,183.40 : x
  2. Step 2: Convert to fraction form
    20,557.43/30,845.54 = 11,183.40/x
  3. Step 3: Cross multiply
    20,557.43x = 30,845.54 × 11,183.40
  4. Step 4: Simplify right side
    20,557.43x = 344,958,039.99
  5. Step 5: Solve for x
    x = 344,958,039.99/20,557.43
  6. Step 6: Final answer
    x = 16,780.21

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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.