Home / 13,636.27-18,809.88-8,321.86

Finding the Fourth Proportional to 13,636.27, 18,809.88 and 8,321.86

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Solution

The fourth proportional to 13,636.27, 18,809.88 and 8,321.86 is: 11,479.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.27 : 18,809.88 = 8,321.86 : x
  2. Step 2: Convert to fraction form
    13,636.27/18,809.88 = 8,321.86/x
  3. Step 3: Cross multiply
    13,636.27x = 18,809.88 × 8,321.86
  4. Step 4: Simplify right side
    13,636.27x = 156,533,093.93
  5. Step 5: Solve for x
    x = 156,533,093.93/13,636.27
  6. Step 6: Final answer
    x = 11,479.18

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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.