Home / 13,185.88-19,778.36-4,420.56

Finding the Fourth Proportional to 13,185.88, 19,778.36 and 4,420.56

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Solution

The fourth proportional to 13,185.88, 19,778.36 and 4,420.56 is: 6,630.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.88 : 19,778.36 = 4,420.56 : x
  2. Step 2: Convert to fraction form
    13,185.88/19,778.36 = 4,420.56/x
  3. Step 3: Cross multiply
    13,185.88x = 19,778.36 × 4,420.56
  4. Step 4: Simplify right side
    13,185.88x = 87,431,427.08
  5. Step 5: Solve for x
    x = 87,431,427.08/13,185.88
  6. Step 6: Final answer
    x = 6,630.69

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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.