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Finding the Fourth Proportional to 38,578.93, 57,870.38 and 10,879.09

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Solution

The fourth proportional to 38,578.93, 57,870.38 and 10,879.09 is: 16,319.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,578.93 : 57,870.38 = 10,879.09 : x
  2. Step 2: Convert to fraction form
    38,578.93/57,870.38 = 10,879.09/x
  3. Step 3: Cross multiply
    38,578.93x = 57,870.38 × 10,879.09
  4. Step 4: Simplify right side
    38,578.93x = 629,577,017.96
  5. Step 5: Solve for x
    x = 629,577,017.96/38,578.93
  6. Step 6: Final answer
    x = 16,319.19

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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.