Home / 20,271.15-30,380.36-8,249.30

Finding the Fourth Proportional to 20,271.15, 30,380.36 and 8,249.30

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Solution

The fourth proportional to 20,271.15, 30,380.36 and 8,249.30 is: 12,363.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.15 : 30,380.36 = 8,249.30 : x
  2. Step 2: Convert to fraction form
    20,271.15/30,380.36 = 8,249.30/x
  3. Step 3: Cross multiply
    20,271.15x = 30,380.36 × 8,249.30
  4. Step 4: Simplify right side
    20,271.15x = 250,616,703.75
  5. Step 5: Solve for x
    x = 250,616,703.75/20,271.15
  6. Step 6: Final answer
    x = 12,363.22

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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.