Home / 13,289.22-18,339.64-7,321.34

Finding the Fourth Proportional to 13,289.22, 18,339.64 and 7,321.34

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Solution

The fourth proportional to 13,289.22, 18,339.64 and 7,321.34 is: 10,103.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.22 : 18,339.64 = 7,321.34 : x
  2. Step 2: Convert to fraction form
    13,289.22/18,339.64 = 7,321.34/x
  3. Step 3: Cross multiply
    13,289.22x = 18,339.64 × 7,321.34
  4. Step 4: Simplify right side
    13,289.22x = 134,270,739.92
  5. Step 5: Solve for x
    x = 134,270,739.92/13,289.22
  6. Step 6: Final answer
    x = 10,103.73

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Similar ratio
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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.