Home / 13,195.86-19,797.81-5,405.28

Finding the Fourth Proportional to 13,195.86, 19,797.81 and 5,405.28

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Solution

The fourth proportional to 13,195.86, 19,797.81 and 5,405.28 is: 8,109.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.86 : 19,797.81 = 5,405.28 : x
  2. Step 2: Convert to fraction form
    13,195.86/19,797.81 = 5,405.28/x
  3. Step 3: Cross multiply
    13,195.86x = 19,797.81 × 5,405.28
  4. Step 4: Simplify right side
    13,195.86x = 107,012,706.44
  5. Step 5: Solve for x
    x = 107,012,706.44/13,195.86
  6. Step 6: Final answer
    x = 8,109.57

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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.