Home / 12,586.37-18,879.97-3,821.25

Finding the Fourth Proportional to 12,586.37, 18,879.97 and 3,821.25

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Solution

The fourth proportional to 12,586.37, 18,879.97 and 3,821.25 is: 5,732.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.37 : 18,879.97 = 3,821.25 : x
  2. Step 2: Convert to fraction form
    12,586.37/18,879.97 = 3,821.25/x
  3. Step 3: Cross multiply
    12,586.37x = 18,879.97 × 3,821.25
  4. Step 4: Simplify right side
    12,586.37x = 72,145,075.81
  5. Step 5: Solve for x
    x = 72,145,075.81/12,586.37
  6. Step 6: Final answer
    x = 5,732.00

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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.