Home / 13,131.39-18,124.25-8,350.41

Finding the Fourth Proportional to 13,131.39, 18,124.25 and 8,350.41

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Solution

The fourth proportional to 13,131.39, 18,124.25 and 8,350.41 is: 11,525.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.39 : 18,124.25 = 8,350.41 : x
  2. Step 2: Convert to fraction form
    13,131.39/18,124.25 = 8,350.41/x
  3. Step 3: Cross multiply
    13,131.39x = 18,124.25 × 8,350.41
  4. Step 4: Simplify right side
    13,131.39x = 151,344,918.44
  5. Step 5: Solve for x
    x = 151,344,918.44/13,131.39
  6. Step 6: Final answer
    x = 11,525.43

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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.