Home / 13,325.22-18,382.68-8,611.02

Finding the Fourth Proportional to 13,325.22, 18,382.68 and 8,611.02

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Solution

The fourth proportional to 13,325.22, 18,382.68 and 8,611.02 is: 11,879.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.22 : 18,382.68 = 8,611.02 : x
  2. Step 2: Convert to fraction form
    13,325.22/18,382.68 = 8,611.02/x
  3. Step 3: Cross multiply
    13,325.22x = 18,382.68 × 8,611.02
  4. Step 4: Simplify right side
    13,325.22x = 158,293,625.13
  5. Step 5: Solve for x
    x = 158,293,625.13/13,325.22
  6. Step 6: Final answer
    x = 11,879.25

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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.