Home / 28,885.20-43,327.80-8,108.70

Finding the Fourth Proportional to 28,885.20, 43,327.80 and 8,108.70

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Solution

The fourth proportional to 28,885.20, 43,327.80 and 8,108.70 is: 12,163.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.20 : 43,327.80 = 8,108.70 : x
  2. Step 2: Convert to fraction form
    28,885.20/43,327.80 = 8,108.70/x
  3. Step 3: Cross multiply
    28,885.20x = 43,327.80 × 8,108.70
  4. Step 4: Simplify right side
    28,885.20x = 351,332,131.86
  5. Step 5: Solve for x
    x = 351,332,131.86/28,885.20
  6. Step 6: Final answer
    x = 12,163.05

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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.