Home / 13,755.29-20,634.31-4,990.89

Finding the Fourth Proportional to 13,755.29, 20,634.31 and 4,990.89

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Solution

The fourth proportional to 13,755.29, 20,634.31 and 4,990.89 is: 7,486.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.29 : 20,634.31 = 4,990.89 : x
  2. Step 2: Convert to fraction form
    13,755.29/20,634.31 = 4,990.89/x
  3. Step 3: Cross multiply
    13,755.29x = 20,634.31 × 4,990.89
  4. Step 4: Simplify right side
    13,755.29x = 102,983,552.72
  5. Step 5: Solve for x
    x = 102,983,552.72/13,755.29
  6. Step 6: Final answer
    x = 7,486.83

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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.