Home / 13,990.32-20,993.04-8,454.24

Finding the Fourth Proportional to 13,990.32, 20,993.04 and 8,454.24

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Solution

The fourth proportional to 13,990.32, 20,993.04 and 8,454.24 is: 12,685.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.32 : 20,993.04 = 8,454.24 : x
  2. Step 2: Convert to fraction form
    13,990.32/20,993.04 = 8,454.24/x
  3. Step 3: Cross multiply
    13,990.32x = 20,993.04 × 8,454.24
  4. Step 4: Simplify right side
    13,990.32x = 177,480,198.49
  5. Step 5: Solve for x
    x = 177,480,198.49/13,990.32
  6. Step 6: Final answer
    x = 12,685.93

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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.