Home / 13,856.44-20,779.92-3,993.06

Finding the Fourth Proportional to 13,856.44, 20,779.92 and 3,993.06

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Solution

The fourth proportional to 13,856.44, 20,779.92 and 3,993.06 is: 5,988.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.44 : 20,779.92 = 3,993.06 : x
  2. Step 2: Convert to fraction form
    13,856.44/20,779.92 = 3,993.06/x
  3. Step 3: Cross multiply
    13,856.44x = 20,779.92 × 3,993.06
  4. Step 4: Simplify right side
    13,856.44x = 82,975,467.36
  5. Step 5: Solve for x
    x = 82,975,467.36/13,856.44
  6. Step 6: Final answer
    x = 5,988.22

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1.5x scale

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.