Home / 18,867,704.40-28,301,556.60-12,821,086.80

Finding the Fourth Proportional to 18,867,704.40, 28,301,556.60 and 12,821,086.80

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Solution

The fourth proportional to 18,867,704.40, 28,301,556.60 and 12,821,086.80 is: 19,231,630.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867,704.40 : 28,301,556.60 = 12,821,086.80 : x
  2. Step 2: Convert to fraction form
    18,867,704.40/28,301,556.60 = 12,821,086.80/x
  3. Step 3: Cross multiply
    18,867,704.40x = 28,301,556.60 × 12,821,086.80
  4. Step 4: Simplify right side
    18,867,704.40x = 362,856,713,743,712.94
  5. Step 5: Solve for x
    x = 362,856,713,743,712.94/18,867,704.40
  6. Step 6: Final answer
    x = 19,231,630.20

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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.