Home / 19,321.44-28,979.74-6,172.72

Finding the Fourth Proportional to 19,321.44, 28,979.74 and 6,172.72

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Solution

The fourth proportional to 19,321.44, 28,979.74 and 6,172.72 is: 9,258.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.44 : 28,979.74 = 6,172.72 : x
  2. Step 2: Convert to fraction form
    19,321.44/28,979.74 = 6,172.72/x
  3. Step 3: Cross multiply
    19,321.44x = 28,979.74 × 6,172.72
  4. Step 4: Simplify right side
    19,321.44x = 178,883,820.69
  5. Step 5: Solve for x
    x = 178,883,820.69/19,321.44
  6. Step 6: Final answer
    x = 9,258.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.