Home / 28,124.56-42,198.48-12,321.42

Finding the Fourth Proportional to 28,124.56, 42,198.48 and 12,321.42

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Solution

The fourth proportional to 28,124.56, 42,198.48 and 12,321.42 is: 18,487.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,124.56 : 42,198.48 = 12,321.42 : x
  2. Step 2: Convert to fraction form
    28,124.56/42,198.48 = 12,321.42/x
  3. Step 3: Cross multiply
    28,124.56x = 42,198.48 × 12,321.42
  4. Step 4: Simplify right side
    28,124.56x = 519,945,195.44
  5. Step 5: Solve for x
    x = 519,945,195.44/28,124.56
  6. Step 6: Final answer
    x = 18,487.23

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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.