Home / 28,194.72-38,908.56-15,619.36

Finding the Fourth Proportional to 28,194.72, 38,908.56 and 15,619.36

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Solution

The fourth proportional to 28,194.72, 38,908.56 and 15,619.36 is: 21,554.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,194.72 : 38,908.56 = 15,619.36 : x
  2. Step 2: Convert to fraction form
    28,194.72/38,908.56 = 15,619.36/x
  3. Step 3: Cross multiply
    28,194.72x = 38,908.56 × 15,619.36
  4. Step 4: Simplify right side
    28,194.72x = 607,726,805.72
  5. Step 5: Solve for x
    x = 607,726,805.72/28,194.72
  6. Step 6: Final answer
    x = 21,554.63

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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.