Home / 13,424.85-18,525.39-8,122.59

Finding the Fourth Proportional to 13,424.85, 18,525.39 and 8,122.59

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Solution

The fourth proportional to 13,424.85, 18,525.39 and 8,122.59 is: 11,208.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.85 : 18,525.39 = 8,122.59 : x
  2. Step 2: Convert to fraction form
    13,424.85/18,525.39 = 8,122.59/x
  3. Step 3: Cross multiply
    13,424.85x = 18,525.39 × 8,122.59
  4. Step 4: Simplify right side
    13,424.85x = 150,474,147.56
  5. Step 5: Solve for x
    x = 150,474,147.56/13,424.85
  6. Step 6: Final answer
    x = 11,208.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.