Home / 28,714-39,621.78-16,768.66

Finding the Fourth Proportional to 28,714, 39,621.78 and 16,768.66

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Solution

The fourth proportional to 28,714, 39,621.78 and 16,768.66 is: 23,138.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,714 : 39,621.78 = 16,768.66 : x
  2. Step 2: Convert to fraction form
    28,714/39,621.78 = 16,768.66/x
  3. Step 3: Cross multiply
    28,714x = 39,621.78 × 16,768.66
  4. Step 4: Simplify right side
    28,714x = 664,404,157.41
  5. Step 5: Solve for x
    x = 664,404,157.41/28,714
  6. Step 6: Final answer
    x = 23,138.68

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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.