Home / 28,768.20-43,169.04-12,127.20

Finding the Fourth Proportional to 28,768.20, 43,169.04 and 12,127.20

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Solution

The fourth proportional to 28,768.20, 43,169.04 and 12,127.20 is: 18,197.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,768.20 : 43,169.04 = 12,127.20 : x
  2. Step 2: Convert to fraction form
    28,768.20/43,169.04 = 12,127.20/x
  3. Step 3: Cross multiply
    28,768.20x = 43,169.04 × 12,127.20
  4. Step 4: Simplify right side
    28,768.20x = 523,519,581.89
  5. Step 5: Solve for x
    x = 523,519,581.89/28,768.20
  6. Step 6: Final answer
    x = 18,197.86

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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.