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Finding the Fourth Proportional to 13,791.63, 20,679.88 and 6,392.01

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Solution

The fourth proportional to 13,791.63, 20,679.88 and 6,392.01 is: 9,584.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.63 : 20,679.88 = 6,392.01 : x
  2. Step 2: Convert to fraction form
    13,791.63/20,679.88 = 6,392.01/x
  3. Step 3: Cross multiply
    13,791.63x = 20,679.88 × 6,392.01
  4. Step 4: Simplify right side
    13,791.63x = 132,185,999.76
  5. Step 5: Solve for x
    x = 132,185,999.76/13,791.63
  6. Step 6: Final answer
    x = 9,584.51

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1.5x scale

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.