Home / 12,862,129.94-19,278,518.31-5,180,855.60

Finding the Fourth Proportional to 12,862,129.94, 19,278,518.31 and 5,180,855.60

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Solution

The fourth proportional to 12,862,129.94, 19,278,518.31 and 5,180,855.60 is: 7,765,371.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,862,129.94 : 19,278,518.31 = 5,180,855.60 : x
  2. Step 2: Convert to fraction form
    12,862,129.94/19,278,518.31 = 5,180,855.60/x
  3. Step 3: Cross multiply
    12,862,129.94x = 19,278,518.31 × 5,180,855.60
  4. Step 4: Simplify right side
    12,862,129.94x = 99,879,219,449,673.44
  5. Step 5: Solve for x
    x = 99,879,219,449,673.44/12,862,129.94
  6. Step 6: Final answer
    x = 7,765,371.67

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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.