Home / 20,003.85-29,979.81-8,143.83

Finding the Fourth Proportional to 20,003.85, 29,979.81 and 8,143.83

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Solution

The fourth proportional to 20,003.85, 29,979.81 and 8,143.83 is: 12,205.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.85 : 29,979.81 = 8,143.83 : x
  2. Step 2: Convert to fraction form
    20,003.85/29,979.81 = 8,143.83/x
  3. Step 3: Cross multiply
    20,003.85x = 29,979.81 × 8,143.83
  4. Step 4: Simplify right side
    20,003.85x = 244,150,476.07
  5. Step 5: Solve for x
    x = 244,150,476.07/20,003.85
  6. Step 6: Final answer
    x = 12,205.17

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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.