Home / 20,838.44-28,758.58-13,752.56

Finding the Fourth Proportional to 20,838.44, 28,758.58 and 13,752.56

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Solution

The fourth proportional to 20,838.44, 28,758.58 and 13,752.56 is: 18,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.44 : 28,758.58 = 13,752.56 : x
  2. Step 2: Convert to fraction form
    20,838.44/28,758.58 = 13,752.56/x
  3. Step 3: Cross multiply
    20,838.44x = 28,758.58 × 13,752.56
  4. Step 4: Simplify right side
    20,838.44x = 395,504,096.96
  5. Step 5: Solve for x
    x = 395,504,096.96/20,838.44
  6. Step 6: Final answer
    x = 18,979.54

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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.