Home / 13,611.72-18,781.74-8,232.60

Finding the Fourth Proportional to 13,611.72, 18,781.74 and 8,232.60

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Solution

The fourth proportional to 13,611.72, 18,781.74 and 8,232.60 is: 11,359.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.72 : 18,781.74 = 8,232.60 : x
  2. Step 2: Convert to fraction form
    13,611.72/18,781.74 = 8,232.60/x
  3. Step 3: Cross multiply
    13,611.72x = 18,781.74 × 8,232.60
  4. Step 4: Simplify right side
    13,611.72x = 154,622,552.72
  5. Step 5: Solve for x
    x = 154,622,552.72/13,611.72
  6. Step 6: Final answer
    x = 11,359.52

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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.