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Finding the Fourth Proportional to 28,122.01, 42,183.06 and 8,399.02

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Solution

The fourth proportional to 28,122.01, 42,183.06 and 8,399.02 is: 12,598.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.01 : 42,183.06 = 8,399.02 : x
  2. Step 2: Convert to fraction form
    28,122.01/42,183.06 = 8,399.02/x
  3. Step 3: Cross multiply
    28,122.01x = 42,183.06 × 8,399.02
  4. Step 4: Simplify right side
    28,122.01x = 354,296,364.60
  5. Step 5: Solve for x
    x = 354,296,364.60/28,122.01
  6. Step 6: Final answer
    x = 12,598.54

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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.