Home / 12,379,132.80-18,568,699.20-3,859,401.60

Finding the Fourth Proportional to 12,379,132.80, 18,568,699.20 and 3,859,401.60

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Solution

The fourth proportional to 12,379,132.80, 18,568,699.20 and 3,859,401.60 is: 5,789,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379,132.80 : 18,568,699.20 = 3,859,401.60 : x
  2. Step 2: Convert to fraction form
    12,379,132.80/18,568,699.20 = 3,859,401.60/x
  3. Step 3: Cross multiply
    12,379,132.80x = 18,568,699.20 × 3,859,401.60
  4. Step 4: Simplify right side
    12,379,132.80x = 71,664,067,402,398.72
  5. Step 5: Solve for x
    x = 71,664,067,402,398.72/12,379,132.80
  6. Step 6: Final answer
    x = 5,789,102.40

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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.