Home / 13,757.88-20,628.63-4,989.90

Finding the Fourth Proportional to 13,757.88, 20,628.63 and 4,989.90

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Solution

The fourth proportional to 13,757.88, 20,628.63 and 4,989.90 is: 7,481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,757.88 : 20,628.63 = 4,989.90 : x
  2. Step 2: Convert to fraction form
    13,757.88/20,628.63 = 4,989.90/x
  3. Step 3: Cross multiply
    13,757.88x = 20,628.63 × 4,989.90
  4. Step 4: Simplify right side
    13,757.88x = 102,934,800.84
  5. Step 5: Solve for x
    x = 102,934,800.84/13,757.88
  6. Step 6: Final answer
    x = 7,481.88

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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.