Home / 12,143,898.40-18,204,183.60-7,021,069.60

Finding the Fourth Proportional to 12,143,898.40, 18,204,183.60 and 7,021,069.60

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Solution

The fourth proportional to 12,143,898.40, 18,204,183.60 and 7,021,069.60 is: 10,524,860.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143,898.40 : 18,204,183.60 = 7,021,069.60 : x
  2. Step 2: Convert to fraction form
    12,143,898.40/18,204,183.60 = 7,021,069.60/x
  3. Step 3: Cross multiply
    12,143,898.40x = 18,204,183.60 × 7,021,069.60
  4. Step 4: Simplify right side
    12,143,898.40x = 127,812,840,066,778.56
  5. Step 5: Solve for x
    x = 127,812,840,066,778.56/12,143,898.40
  6. Step 6: Final answer
    x = 10,524,860.79

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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.