Home / 13,388.63-18,450.82-9,804.68

Finding the Fourth Proportional to 13,388.63, 18,450.82 and 9,804.68

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Solution

The fourth proportional to 13,388.63, 18,450.82 and 9,804.68 is: 13,511.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.63 : 18,450.82 = 9,804.68 : x
  2. Step 2: Convert to fraction form
    13,388.63/18,450.82 = 9,804.68/x
  3. Step 3: Cross multiply
    13,388.63x = 18,450.82 × 9,804.68
  4. Step 4: Simplify right side
    13,388.63x = 180,904,375.03
  5. Step 5: Solve for x
    x = 180,904,375.03/13,388.63
  6. Step 6: Final answer
    x = 13,511.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.