Home / 13,420.44-20,131.66-3,559.50

Finding the Fourth Proportional to 13,420.44, 20,131.66 and 3,559.50

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Solution

The fourth proportional to 13,420.44, 20,131.66 and 3,559.50 is: 5,339.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.44 : 20,131.66 = 3,559.50 : x
  2. Step 2: Convert to fraction form
    13,420.44/20,131.66 = 3,559.50/x
  3. Step 3: Cross multiply
    13,420.44x = 20,131.66 × 3,559.50
  4. Step 4: Simplify right side
    13,420.44x = 71,658,643.77
  5. Step 5: Solve for x
    x = 71,658,643.77/13,420.44
  6. Step 6: Final answer
    x = 5,339.52

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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.