Home / 20,949.08-28,908.50-11,517.64

Finding the Fourth Proportional to 20,949.08, 28,908.50 and 11,517.64

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Solution

The fourth proportional to 20,949.08, 28,908.50 and 11,517.64 is: 15,893.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.08 : 28,908.50 = 11,517.64 : x
  2. Step 2: Convert to fraction form
    20,949.08/28,908.50 = 11,517.64/x
  3. Step 3: Cross multiply
    20,949.08x = 28,908.50 × 11,517.64
  4. Step 4: Simplify right side
    20,949.08x = 332,957,695.94
  5. Step 5: Solve for x
    x = 332,957,695.94/20,949.08
  6. Step 6: Final answer
    x = 15,893.67

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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.