Home / 20,698.27-28,556.19-13,893.95

Finding the Fourth Proportional to 20,698.27, 28,556.19 and 13,893.95

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Solution

The fourth proportional to 20,698.27, 28,556.19 and 13,893.95 is: 19,168.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.27 : 28,556.19 = 13,893.95 : x
  2. Step 2: Convert to fraction form
    20,698.27/28,556.19 = 13,893.95/x
  3. Step 3: Cross multiply
    20,698.27x = 28,556.19 × 13,893.95
  4. Step 4: Simplify right side
    20,698.27x = 396,758,347.44
  5. Step 5: Solve for x
    x = 396,758,347.44/20,698.27
  6. Step 6: Final answer
    x = 19,168.67

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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.