Home / 12,889,559.82-17,782,558.20-7,379,990.15

Finding the Fourth Proportional to 12,889,559.82, 17,782,558.20 and 7,379,990.15

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Solution

The fourth proportional to 12,889,559.82, 17,782,558.20 and 7,379,990.15 is: 10,181,503.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889,559.82 : 17,782,558.20 = 7,379,990.15 : x
  2. Step 2: Convert to fraction form
    12,889,559.82/17,782,558.20 = 7,379,990.15/x
  3. Step 3: Cross multiply
    12,889,559.82x = 17,782,558.20 × 7,379,990.15
  4. Step 4: Simplify right side
    12,889,559.82x = 131,235,104,268,888.92
  5. Step 5: Solve for x
    x = 131,235,104,268,888.92/12,889,559.82
  6. Step 6: Final answer
    x = 10,181,503.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.