Home / 13,555.32-20,333-3,694.60

Finding the Fourth Proportional to 13,555.32, 20,333 and 3,694.60

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Solution

The fourth proportional to 13,555.32, 20,333 and 3,694.60 is: 5,541.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.32 : 20,333 = 3,694.60 : x
  2. Step 2: Convert to fraction form
    13,555.32/20,333 = 3,694.60/x
  3. Step 3: Cross multiply
    13,555.32x = 20,333 × 3,694.60
  4. Step 4: Simplify right side
    13,555.32x = 75,122,301.80
  5. Step 5: Solve for x
    x = 75,122,301.80/13,555.32
  6. Step 6: Final answer
    x = 5,541.91

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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.