Home / 28,879.06-39,841.05-19,431.22

Finding the Fourth Proportional to 28,879.06, 39,841.05 and 19,431.22

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Solution

The fourth proportional to 28,879.06, 39,841.05 and 19,431.22 is: 26,806.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,879.06 : 39,841.05 = 19,431.22 : x
  2. Step 2: Convert to fraction form
    28,879.06/39,841.05 = 19,431.22/x
  3. Step 3: Cross multiply
    28,879.06x = 39,841.05 × 19,431.22
  4. Step 4: Simplify right side
    28,879.06x = 774,160,207.58
  5. Step 5: Solve for x
    x = 774,160,207.58/28,879.06
  6. Step 6: Final answer
    x = 26,806.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.