Home / 19,139.82-28,704.54-12,109.26

Finding the Fourth Proportional to 19,139.82, 28,704.54 and 12,109.26

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Solution

The fourth proportional to 19,139.82, 28,704.54 and 12,109.26 is: 18,160.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.82 : 28,704.54 = 12,109.26 : x
  2. Step 2: Convert to fraction form
    19,139.82/28,704.54 = 12,109.26/x
  3. Step 3: Cross multiply
    19,139.82x = 28,704.54 × 12,109.26
  4. Step 4: Simplify right side
    19,139.82x = 347,590,738.04
  5. Step 5: Solve for x
    x = 347,590,738.04/19,139.82
  6. Step 6: Final answer
    x = 18,160.61

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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.