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Finding the Fourth Proportional to 28,758.52, 43,120.77 and 11,207.86

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Solution

The fourth proportional to 28,758.52, 43,120.77 and 11,207.86 is: 16,805.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,758.52 : 43,120.77 = 11,207.86 : x
  2. Step 2: Convert to fraction form
    28,758.52/43,120.77 = 11,207.86/x
  3. Step 3: Cross multiply
    28,758.52x = 43,120.77 × 11,207.86
  4. Step 4: Simplify right side
    28,758.52x = 483,291,553.25
  5. Step 5: Solve for x
    x = 483,291,553.25/28,758.52
  6. Step 6: Final answer
    x = 16,805.16

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.