Home / 10,185.70-15,280.85-3,611.88

Finding the Fourth Proportional to 10,185.70, 15,280.85 and 3,611.88

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Solution

The fourth proportional to 10,185.70, 15,280.85 and 3,611.88 is: 5,418.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.70 : 15,280.85 = 3,611.88 : x
  2. Step 2: Convert to fraction form
    10,185.70/15,280.85 = 3,611.88/x
  3. Step 3: Cross multiply
    10,185.70x = 15,280.85 × 3,611.88
  4. Step 4: Simplify right side
    10,185.70x = 55,192,584.04
  5. Step 5: Solve for x
    x = 55,192,584.04/10,185.70
  6. Step 6: Final answer
    x = 5,418.63

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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.