Home / 18,758.23-28,145.12-8,222.80

Finding the Fourth Proportional to 18,758.23, 28,145.12 and 8,222.80

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Solution

The fourth proportional to 18,758.23, 28,145.12 and 8,222.80 is: 12,337.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.23 : 28,145.12 = 8,222.80 : x
  2. Step 2: Convert to fraction form
    18,758.23/28,145.12 = 8,222.80/x
  3. Step 3: Cross multiply
    18,758.23x = 28,145.12 × 8,222.80
  4. Step 4: Simplify right side
    18,758.23x = 231,431,692.74
  5. Step 5: Solve for x
    x = 231,431,692.74/18,758.23
  6. Step 6: Final answer
    x = 12,337.61

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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.