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Finding the Fourth Proportional to 18,796.78, 28,194.16 and 6,316.90

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Solution

The fourth proportional to 18,796.78, 28,194.16 and 6,316.90 is: 9,475.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.78 : 28,194.16 = 6,316.90 : x
  2. Step 2: Convert to fraction form
    18,796.78/28,194.16 = 6,316.90/x
  3. Step 3: Cross multiply
    18,796.78x = 28,194.16 × 6,316.90
  4. Step 4: Simplify right side
    18,796.78x = 178,099,689.30
  5. Step 5: Solve for x
    x = 178,099,689.30/18,796.78
  6. Step 6: Final answer
    x = 9,475.01

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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.