Home / 12,286,906.20-18,465,788.70-10,728,012.60

Finding the Fourth Proportional to 12,286,906.20, 18,465,788.70 and 10,728,012.60

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Solution

The fourth proportional to 12,286,906.20, 18,465,788.70 and 10,728,012.60 is: 16,122,953.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286,906.20 : 18,465,788.70 = 10,728,012.60 : x
  2. Step 2: Convert to fraction form
    12,286,906.20/18,465,788.70 = 10,728,012.60/x
  3. Step 3: Cross multiply
    12,286,906.20x = 18,465,788.70 × 10,728,012.60
  4. Step 4: Simplify right side
    12,286,906.20x = 198,101,213,842,537.59
  5. Step 5: Solve for x
    x = 198,101,213,842,537.59/12,286,906.20
  6. Step 6: Final answer
    x = 16,122,953.22

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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.