Home / 28,000.28-41,986.73-12,218.64

Finding the Fourth Proportional to 28,000.28, 41,986.73 and 12,218.64

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Solution

The fourth proportional to 28,000.28, 41,986.73 and 12,218.64 is: 18,321.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.28 : 41,986.73 = 12,218.64 : x
  2. Step 2: Convert to fraction form
    28,000.28/41,986.73 = 12,218.64/x
  3. Step 3: Cross multiply
    28,000.28x = 41,986.73 × 12,218.64
  4. Step 4: Simplify right side
    28,000.28x = 513,020,738.65
  5. Step 5: Solve for x
    x = 513,020,738.65/28,000.28
  6. Step 6: Final answer
    x = 18,321.99

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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.