Home / 25,879.09-38,790.94-13,386.54

Finding the Fourth Proportional to 25,879.09, 38,790.94 and 13,386.54

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Solution

The fourth proportional to 25,879.09, 38,790.94 and 13,386.54 is: 20,065.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,879.09 : 38,790.94 = 13,386.54 : x
  2. Step 2: Convert to fraction form
    25,879.09/38,790.94 = 13,386.54/x
  3. Step 3: Cross multiply
    25,879.09x = 38,790.94 × 13,386.54
  4. Step 4: Simplify right side
    25,879.09x = 519,276,469.95
  5. Step 5: Solve for x
    x = 519,276,469.95/25,879.09
  6. Step 6: Final answer
    x = 20,065.48

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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.