Home / 18,768.70-25,905.18-12,396.43

Finding the Fourth Proportional to 18,768.70, 25,905.18 and 12,396.43

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Solution

The fourth proportional to 18,768.70, 25,905.18 and 12,396.43 is: 17,109.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.70 : 25,905.18 = 12,396.43 : x
  2. Step 2: Convert to fraction form
    18,768.70/25,905.18 = 12,396.43/x
  3. Step 3: Cross multiply
    18,768.70x = 25,905.18 × 12,396.43
  4. Step 4: Simplify right side
    18,768.70x = 321,131,750.51
  5. Step 5: Solve for x
    x = 321,131,750.51/18,768.70
  6. Step 6: Final answer
    x = 17,109.96

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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.