Home / 13,479,906.40-20,219,859.60-8,378,072.80

Finding the Fourth Proportional to 13,479,906.40, 20,219,859.60 and 8,378,072.80

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Solution

The fourth proportional to 13,479,906.40, 20,219,859.60 and 8,378,072.80 is: 12,567,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479,906.40 : 20,219,859.60 = 8,378,072.80 : x
  2. Step 2: Convert to fraction form
    13,479,906.40/20,219,859.60 = 8,378,072.80/x
  3. Step 3: Cross multiply
    13,479,906.40x = 20,219,859.60 × 8,378,072.80
  4. Step 4: Simplify right side
    13,479,906.40x = 169,403,455,734,578.88
  5. Step 5: Solve for x
    x = 169,403,455,734,578.88/13,479,906.40
  6. Step 6: Final answer
    x = 12,567,109.20

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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.