Home / 12,072.90-18,111-3,751.36

Finding the Fourth Proportional to 12,072.90, 18,111 and 3,751.36

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Solution

The fourth proportional to 12,072.90, 18,111 and 3,751.36 is: 5,627.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.90 : 18,111 = 3,751.36 : x
  2. Step 2: Convert to fraction form
    12,072.90/18,111 = 3,751.36/x
  3. Step 3: Cross multiply
    12,072.90x = 18,111 × 3,751.36
  4. Step 4: Simplify right side
    12,072.90x = 67,940,880.96
  5. Step 5: Solve for x
    x = 67,940,880.96/12,072.90
  6. Step 6: Final answer
    x = 5,627.56

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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.