Home / 28,922.20-43,383.30-8,145.70

Finding the Fourth Proportional to 28,922.20, 43,383.30 and 8,145.70

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Solution

The fourth proportional to 28,922.20, 43,383.30 and 8,145.70 is: 12,218.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,922.20 : 43,383.30 = 8,145.70 : x
  2. Step 2: Convert to fraction form
    28,922.20/43,383.30 = 8,145.70/x
  3. Step 3: Cross multiply
    28,922.20x = 43,383.30 × 8,145.70
  4. Step 4: Simplify right side
    28,922.20x = 353,387,346.81
  5. Step 5: Solve for x
    x = 353,387,346.81/28,922.20
  6. Step 6: Final answer
    x = 12,218.55

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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.