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Finding the Fourth Proportional to 28,486.96, 39,311.97 and 17,163

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Solution

The fourth proportional to 28,486.96, 39,311.97 and 17,163 is: 23,684.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,486.96 : 39,311.97 = 17,163 : x
  2. Step 2: Convert to fraction form
    28,486.96/39,311.97 = 17,163/x
  3. Step 3: Cross multiply
    28,486.96x = 39,311.97 × 17,163
  4. Step 4: Simplify right side
    28,486.96x = 674,711,276.75
  5. Step 5: Solve for x
    x = 674,711,276.75/28,486.96
  6. Step 6: Final answer
    x = 23,684.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.