Home / 13,195.40-19,804.30-5,409.80

Finding the Fourth Proportional to 13,195.40, 19,804.30 and 5,409.80

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Solution

The fourth proportional to 13,195.40, 19,804.30 and 5,409.80 is: 8,119.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.40 : 19,804.30 = 5,409.80 : x
  2. Step 2: Convert to fraction form
    13,195.40/19,804.30 = 5,409.80/x
  3. Step 3: Cross multiply
    13,195.40x = 19,804.30 × 5,409.80
  4. Step 4: Simplify right side
    13,195.40x = 107,137,302.14
  5. Step 5: Solve for x
    x = 107,137,302.14/13,195.40
  6. Step 6: Final answer
    x = 8,119.29

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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.