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Finding the Fourth Proportional to 18,310.88, 25,268.96 and 9,927.38

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Solution

The fourth proportional to 18,310.88, 25,268.96 and 9,927.38 is: 13,699.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.88 : 25,268.96 = 9,927.38 : x
  2. Step 2: Convert to fraction form
    18,310.88/25,268.96 = 9,927.38/x
  3. Step 3: Cross multiply
    18,310.88x = 25,268.96 × 9,927.38
  4. Step 4: Simplify right side
    18,310.88x = 250,854,518.49
  5. Step 5: Solve for x
    x = 250,854,518.49/18,310.88
  6. Step 6: Final answer
    x = 13,699.75

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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.