Home / 28,406.31-39,198.94-15,658.83

Finding the Fourth Proportional to 28,406.31, 39,198.94 and 15,658.83

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Solution

The fourth proportional to 28,406.31, 39,198.94 and 15,658.83 is: 21,608.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,406.31 : 39,198.94 = 15,658.83 : x
  2. Step 2: Convert to fraction form
    28,406.31/39,198.94 = 15,658.83/x
  3. Step 3: Cross multiply
    28,406.31x = 39,198.94 × 15,658.83
  4. Step 4: Simplify right side
    28,406.31x = 613,809,263.35
  5. Step 5: Solve for x
    x = 613,809,263.35/28,406.31
  6. Step 6: Final answer
    x = 21,608.21

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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.