Home / 13,611.08-20,425.32-8,684.24

Finding the Fourth Proportional to 13,611.08, 20,425.32 and 8,684.24

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Solution

The fourth proportional to 13,611.08, 20,425.32 and 8,684.24 is: 13,031.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.08 : 20,425.32 = 8,684.24 : x
  2. Step 2: Convert to fraction form
    13,611.08/20,425.32 = 8,684.24/x
  3. Step 3: Cross multiply
    13,611.08x = 20,425.32 × 8,684.24
  4. Step 4: Simplify right side
    13,611.08x = 177,378,380.96
  5. Step 5: Solve for x
    x = 177,378,380.96/13,611.08
  6. Step 6: Final answer
    x = 13,031.91

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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.