Home / 13,679.52-20,504.96-7,749

Finding the Fourth Proportional to 13,679.52, 20,504.96 and 7,749

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Solution

The fourth proportional to 13,679.52, 20,504.96 and 7,749 is: 11,615.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.52 : 20,504.96 = 7,749 : x
  2. Step 2: Convert to fraction form
    13,679.52/20,504.96 = 7,749/x
  3. Step 3: Cross multiply
    13,679.52x = 20,504.96 × 7,749
  4. Step 4: Simplify right side
    13,679.52x = 158,892,935.04
  5. Step 5: Solve for x
    x = 158,892,935.04/13,679.52
  6. Step 6: Final answer
    x = 11,615.39

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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.