Home / 20,132.96-30,205.92-8,443.04

Finding the Fourth Proportional to 20,132.96, 30,205.92 and 8,443.04

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Solution

The fourth proportional to 20,132.96, 30,205.92 and 8,443.04 is: 12,667.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.96 : 30,205.92 = 8,443.04 : x
  2. Step 2: Convert to fraction form
    20,132.96/30,205.92 = 8,443.04/x
  3. Step 3: Cross multiply
    20,132.96x = 30,205.92 × 8,443.04
  4. Step 4: Simplify right side
    20,132.96x = 255,029,790.80
  5. Step 5: Solve for x
    x = 255,029,790.80/20,132.96
  6. Step 6: Final answer
    x = 12,667.28

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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.