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Finding the Fourth Proportional to 28,516.44, 42,774.68 and 7,739.94

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Solution

The fourth proportional to 28,516.44, 42,774.68 and 7,739.94 is: 11,609.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.44 : 42,774.68 = 7,739.94 : x
  2. Step 2: Convert to fraction form
    28,516.44/42,774.68 = 7,739.94/x
  3. Step 3: Cross multiply
    28,516.44x = 42,774.68 × 7,739.94
  4. Step 4: Simplify right side
    28,516.44x = 331,073,456.72
  5. Step 5: Solve for x
    x = 331,073,456.72/28,516.44
  6. Step 6: Final answer
    x = 11,609.92

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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.