Home / 18,478.14-27,716.94-8,611.80

Finding the Fourth Proportional to 18,478.14, 27,716.94 and 8,611.80

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Solution

The fourth proportional to 18,478.14, 27,716.94 and 8,611.80 is: 12,917.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.14 : 27,716.94 = 8,611.80 : x
  2. Step 2: Convert to fraction form
    18,478.14/27,716.94 = 8,611.80/x
  3. Step 3: Cross multiply
    18,478.14x = 27,716.94 × 8,611.80
  4. Step 4: Simplify right side
    18,478.14x = 238,692,743.89
  5. Step 5: Solve for x
    x = 238,692,743.89/18,478.14
  6. Step 6: Final answer
    x = 12,917.57

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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.