Home / 12,175.37-18,271.25-4,778.95

Finding the Fourth Proportional to 12,175.37, 18,271.25 and 4,778.95

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Solution

The fourth proportional to 12,175.37, 18,271.25 and 4,778.95 is: 7,171.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,175.37 : 18,271.25 = 4,778.95 : x
  2. Step 2: Convert to fraction form
    12,175.37/18,271.25 = 4,778.95/x
  3. Step 3: Cross multiply
    12,175.37x = 18,271.25 × 4,778.95
  4. Step 4: Simplify right side
    12,175.37x = 87,317,274.94
  5. Step 5: Solve for x
    x = 87,317,274.94/12,175.37
  6. Step 6: Final answer
    x = 7,171.64

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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.