Home / 28,653.87-39,541.31-15,907.61

Finding the Fourth Proportional to 28,653.87, 39,541.31 and 15,907.61

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Solution

The fourth proportional to 28,653.87, 39,541.31 and 15,907.61 is: 21,951.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,653.87 : 39,541.31 = 15,907.61 : x
  2. Step 2: Convert to fraction form
    28,653.87/39,541.31 = 15,907.61/x
  3. Step 3: Cross multiply
    28,653.87x = 39,541.31 × 15,907.61
  4. Step 4: Simplify right side
    28,653.87x = 629,007,876.99
  5. Step 5: Solve for x
    x = 629,007,876.99/28,653.87
  6. Step 6: Final answer
    x = 21,951.93

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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.