Home / 18,722,408.20-28,083,612.30-13,646,235.40

Finding the Fourth Proportional to 18,722,408.20, 28,083,612.30 and 13,646,235.40

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Solution

The fourth proportional to 18,722,408.20, 28,083,612.30 and 13,646,235.40 is: 20,469,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,408.20 : 28,083,612.30 = 13,646,235.40 : x
  2. Step 2: Convert to fraction form
    18,722,408.20/28,083,612.30 = 13,646,235.40/x
  3. Step 3: Cross multiply
    18,722,408.20x = 28,083,612.30 × 13,646,235.40
  4. Step 4: Simplify right side
    18,722,408.20x = 383,235,584,328,135.44
  5. Step 5: Solve for x
    x = 383,235,584,328,135.44/18,722,408.20
  6. Step 6: Final answer
    x = 20,469,353.10

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Similar ratio
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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.