Home / 13,987.44-20,982.24-8,447.04

Finding the Fourth Proportional to 13,987.44, 20,982.24 and 8,447.04

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Solution

The fourth proportional to 13,987.44, 20,982.24 and 8,447.04 is: 12,671.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.44 : 20,982.24 = 8,447.04 : x
  2. Step 2: Convert to fraction form
    13,987.44/20,982.24 = 8,447.04/x
  3. Step 3: Cross multiply
    13,987.44x = 20,982.24 × 8,447.04
  4. Step 4: Simplify right side
    13,987.44x = 177,237,820.57
  5. Step 5: Solve for x
    x = 177,237,820.57/13,987.44
  6. Step 6: Final answer
    x = 12,671.21

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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.