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Finding the Fourth Proportional to 19,241.78, 28,839.09 and 10,928.79

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Solution

The fourth proportional to 19,241.78, 28,839.09 and 10,928.79 is: 16,379.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,241.78 : 28,839.09 = 10,928.79 : x
  2. Step 2: Convert to fraction form
    19,241.78/28,839.09 = 10,928.79/x
  3. Step 3: Cross multiply
    19,241.78x = 28,839.09 × 10,928.79
  4. Step 4: Simplify right side
    19,241.78x = 315,176,159.56
  5. Step 5: Solve for x
    x = 315,176,159.56/19,241.78
  6. Step 6: Final answer
    x = 16,379.78

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1.5x scale

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.