Home / 18,760.54-28,136.61-5,611.20

Finding the Fourth Proportional to 18,760.54, 28,136.61 and 5,611.20

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Solution

The fourth proportional to 18,760.54, 28,136.61 and 5,611.20 is: 8,415.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,760.54 : 28,136.61 = 5,611.20 : x
  2. Step 2: Convert to fraction form
    18,760.54/28,136.61 = 5,611.20/x
  3. Step 3: Cross multiply
    18,760.54x = 28,136.61 × 5,611.20
  4. Step 4: Simplify right side
    18,760.54x = 157,880,146.03
  5. Step 5: Solve for x
    x = 157,880,146.03/18,760.54
  6. Step 6: Final answer
    x = 8,415.54

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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.