Home / 28,194-38,907.72-15,619.56

Finding the Fourth Proportional to 28,194, 38,907.72 and 15,619.56

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Solution

The fourth proportional to 28,194, 38,907.72 and 15,619.56 is: 21,554.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,194 : 38,907.72 = 15,619.56 : x
  2. Step 2: Convert to fraction form
    28,194/38,907.72 = 15,619.56/x
  3. Step 3: Cross multiply
    28,194x = 38,907.72 × 15,619.56
  4. Step 4: Simplify right side
    28,194x = 607,721,467.00
  5. Step 5: Solve for x
    x = 607,721,467.00/28,194
  6. Step 6: Final answer
    x = 21,554.99

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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.