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Finding the Fourth Proportional to 18,354, 25,317 and 14,636.88

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Solution

The fourth proportional to 18,354, 25,317 and 14,636.88 is: 20,189.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,354 : 25,317 = 14,636.88 : x
  2. Step 2: Convert to fraction form
    18,354/25,317 = 14,636.88/x
  3. Step 3: Cross multiply
    18,354x = 25,317 × 14,636.88
  4. Step 4: Simplify right side
    18,354x = 370,561,890.96
  5. Step 5: Solve for x
    x = 370,561,890.96/18,354
  6. Step 6: Final answer
    x = 20,189.71

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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.