Home / 13,755.83-20,636.82-4,990.55

Finding the Fourth Proportional to 13,755.83, 20,636.82 and 4,990.55

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Solution

The fourth proportional to 13,755.83, 20,636.82 and 4,990.55 is: 7,486.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.83 : 20,636.82 = 4,990.55 : x
  2. Step 2: Convert to fraction form
    13,755.83/20,636.82 = 4,990.55/x
  3. Step 3: Cross multiply
    13,755.83x = 20,636.82 × 4,990.55
  4. Step 4: Simplify right side
    13,755.83x = 102,989,133.64
  5. Step 5: Solve for x
    x = 102,989,133.64/13,755.83
  6. Step 6: Final answer
    x = 7,486.94

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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.