Home / 19,138.82-28,670.79-12,544.88

Finding the Fourth Proportional to 19,138.82, 28,670.79 and 12,544.88

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Solution

The fourth proportional to 19,138.82, 28,670.79 and 12,544.88 is: 18,792.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.82 : 28,670.79 = 12,544.88 : x
  2. Step 2: Convert to fraction form
    19,138.82/28,670.79 = 12,544.88/x
  3. Step 3: Cross multiply
    19,138.82x = 28,670.79 × 12,544.88
  4. Step 4: Simplify right side
    19,138.82x = 359,671,620.06
  5. Step 5: Solve for x
    x = 359,671,620.06/19,138.82
  6. Step 6: Final answer
    x = 18,792.78

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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.