Home / 18,087.40-27,172.67-12,835.36

Finding the Fourth Proportional to 18,087.40, 27,172.67 and 12,835.36

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Solution

The fourth proportional to 18,087.40, 27,172.67 and 12,835.36 is: 19,282.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087.40 : 27,172.67 = 12,835.36 : x
  2. Step 2: Convert to fraction form
    18,087.40/27,172.67 = 12,835.36/x
  3. Step 3: Cross multiply
    18,087.40x = 27,172.67 × 12,835.36
  4. Step 4: Simplify right side
    18,087.40x = 348,770,971.40
  5. Step 5: Solve for x
    x = 348,770,971.40/18,087.40
  6. Step 6: Final answer
    x = 19,282.54

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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.