Home / 28,183.60-38,893.36-15,608.40

Finding the Fourth Proportional to 28,183.60, 38,893.36 and 15,608.40

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Solution

The fourth proportional to 28,183.60, 38,893.36 and 15,608.40 is: 21,539.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,183.60 : 38,893.36 = 15,608.40 : x
  2. Step 2: Convert to fraction form
    28,183.60/38,893.36 = 15,608.40/x
  3. Step 3: Cross multiply
    28,183.60x = 38,893.36 × 15,608.40
  4. Step 4: Simplify right side
    28,183.60x = 607,063,120.22
  5. Step 5: Solve for x
    x = 607,063,120.22/28,183.60
  6. Step 6: Final answer
    x = 21,539.59

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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.