Home / 18,743.04-28,123.74-8,211.64

Finding the Fourth Proportional to 18,743.04, 28,123.74 and 8,211.64

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Solution

The fourth proportional to 18,743.04, 28,123.74 and 8,211.64 is: 12,321.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.04 : 28,123.74 = 8,211.64 : x
  2. Step 2: Convert to fraction form
    18,743.04/28,123.74 = 8,211.64/x
  3. Step 3: Cross multiply
    18,743.04x = 28,123.74 × 8,211.64
  4. Step 4: Simplify right side
    18,743.04x = 230,942,028.33
  5. Step 5: Solve for x
    x = 230,942,028.33/18,743.04
  6. Step 6: Final answer
    x = 12,321.48

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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.