Home / 13,554.78-20,328.86-3,694.12

Finding the Fourth Proportional to 13,554.78, 20,328.86 and 3,694.12

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Solution

The fourth proportional to 13,554.78, 20,328.86 and 3,694.12 is: 5,540.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,554.78 : 20,328.86 = 3,694.12 : x
  2. Step 2: Convert to fraction form
    13,554.78/20,328.86 = 3,694.12/x
  3. Step 3: Cross multiply
    13,554.78x = 20,328.86 × 3,694.12
  4. Step 4: Simplify right side
    13,554.78x = 75,097,248.30
  5. Step 5: Solve for x
    x = 75,097,248.30/13,554.78
  6. Step 6: Final answer
    x = 5,540.28

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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.