Home / 12,089.67-18,126-4,687.89

Finding the Fourth Proportional to 12,089.67, 18,126 and 4,687.89

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Solution

The fourth proportional to 12,089.67, 18,126 and 4,687.89 is: 7,028.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,089.67 : 18,126 = 4,687.89 : x
  2. Step 2: Convert to fraction form
    12,089.67/18,126 = 4,687.89/x
  3. Step 3: Cross multiply
    12,089.67x = 18,126 × 4,687.89
  4. Step 4: Simplify right side
    12,089.67x = 84,972,694.14
  5. Step 5: Solve for x
    x = 84,972,694.14/12,089.67
  6. Step 6: Final answer
    x = 7,028.54

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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.