Home / 13,940.22-20,905.58-5,618.08

Finding the Fourth Proportional to 13,940.22, 20,905.58 and 5,618.08

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Solution

The fourth proportional to 13,940.22, 20,905.58 and 5,618.08 is: 8,425.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.22 : 20,905.58 = 5,618.08 : x
  2. Step 2: Convert to fraction form
    13,940.22/20,905.58 = 5,618.08/x
  3. Step 3: Cross multiply
    13,940.22x = 20,905.58 × 5,618.08
  4. Step 4: Simplify right side
    13,940.22x = 117,449,220.89
  5. Step 5: Solve for x
    x = 117,449,220.89/13,940.22
  6. Step 6: Final answer
    x = 8,425.21

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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.