Home / 11,621.76-17,430.21-3,828.75

Finding the Fourth Proportional to 11,621.76, 17,430.21 and 3,828.75

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Solution

The fourth proportional to 11,621.76, 17,430.21 and 3,828.75 is: 5,742.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.76 : 17,430.21 = 3,828.75 : x
  2. Step 2: Convert to fraction form
    11,621.76/17,430.21 = 3,828.75/x
  3. Step 3: Cross multiply
    11,621.76x = 17,430.21 × 3,828.75
  4. Step 4: Simplify right side
    11,621.76x = 66,735,916.54
  5. Step 5: Solve for x
    x = 66,735,916.54/11,621.76
  6. Step 6: Final answer
    x = 5,742.32

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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.