Home / 20,745.89-28,631.75-11,794.73

Finding the Fourth Proportional to 20,745.89, 28,631.75 and 11,794.73

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Solution

The fourth proportional to 20,745.89, 28,631.75 and 11,794.73 is: 16,278.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.89 : 28,631.75 = 11,794.73 : x
  2. Step 2: Convert to fraction form
    20,745.89/28,631.75 = 11,794.73/x
  3. Step 3: Cross multiply
    20,745.89x = 28,631.75 × 11,794.73
  4. Step 4: Simplify right side
    20,745.89x = 337,703,719.60
  5. Step 5: Solve for x
    x = 337,703,719.60/20,745.89
  6. Step 6: Final answer
    x = 16,278.10

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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.