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Finding the Fourth Proportional to 28,047.96, 42,076.32 and 8,328.48

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Solution

The fourth proportional to 28,047.96, 42,076.32 and 8,328.48 is: 12,494.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,047.96 : 42,076.32 = 8,328.48 : x
  2. Step 2: Convert to fraction form
    28,047.96/42,076.32 = 8,328.48/x
  3. Step 3: Cross multiply
    28,047.96x = 42,076.32 × 8,328.48
  4. Step 4: Simplify right side
    28,047.96x = 350,431,789.59
  5. Step 5: Solve for x
    x = 350,431,789.59/28,047.96
  6. Step 6: Final answer
    x = 12,494.02

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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.