Home / 20,850.02-28,772.82-11,289.75

Finding the Fourth Proportional to 20,850.02, 28,772.82 and 11,289.75

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Solution

The fourth proportional to 20,850.02, 28,772.82 and 11,289.75 is: 15,579.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.02 : 28,772.82 = 11,289.75 : x
  2. Step 2: Convert to fraction form
    20,850.02/28,772.82 = 11,289.75/x
  3. Step 3: Cross multiply
    20,850.02x = 28,772.82 × 11,289.75
  4. Step 4: Simplify right side
    20,850.02x = 324,837,836.70
  5. Step 5: Solve for x
    x = 324,837,836.70/20,850.02
  6. Step 6: Final answer
    x = 15,579.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.