Home / 19,135.82-28,698.53-12,105.27

Finding the Fourth Proportional to 19,135.82, 28,698.53 and 12,105.27

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Solution

The fourth proportional to 19,135.82, 28,698.53 and 12,105.27 is: 18,154.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,135.82 : 28,698.53 = 12,105.27 : x
  2. Step 2: Convert to fraction form
    19,135.82/28,698.53 = 12,105.27/x
  3. Step 3: Cross multiply
    19,135.82x = 28,698.53 × 12,105.27
  4. Step 4: Simplify right side
    19,135.82x = 347,403,454.25
  5. Step 5: Solve for x
    x = 347,403,454.25/19,135.82
  6. Step 6: Final answer
    x = 18,154.62

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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.