Home / 13,755.08-20,635.70-4,989.80

Finding the Fourth Proportional to 13,755.08, 20,635.70 and 4,989.80

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Solution

The fourth proportional to 13,755.08, 20,635.70 and 4,989.80 is: 7,485.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.08 : 20,635.70 = 4,989.80 : x
  2. Step 2: Convert to fraction form
    13,755.08/20,635.70 = 4,989.80/x
  3. Step 3: Cross multiply
    13,755.08x = 20,635.70 × 4,989.80
  4. Step 4: Simplify right side
    13,755.08x = 102,968,042.50
  5. Step 5: Solve for x
    x = 102,968,042.50/13,755.08
  6. Step 6: Final answer
    x = 7,485.82

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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.