Home / 9,994.20-13,791.92-5,518.16

Finding the Fourth Proportional to 9,994.20, 13,791.92 and 5,518.16

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Solution

The fourth proportional to 9,994.20, 13,791.92 and 5,518.16 is: 7,615.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,994.20 : 13,791.92 = 5,518.16 : x
  2. Step 2: Convert to fraction form
    9,994.20/13,791.92 = 5,518.16/x
  3. Step 3: Cross multiply
    9,994.20x = 13,791.92 × 5,518.16
  4. Step 4: Simplify right side
    9,994.20x = 76,106,021.27
  5. Step 5: Solve for x
    x = 76,106,021.27/9,994.20
  6. Step 6: Final answer
    x = 7,615.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.