Home / 13,861.77-20,790.37-3,998.40

Finding the Fourth Proportional to 13,861.77, 20,790.37 and 3,998.40

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Solution

The fourth proportional to 13,861.77, 20,790.37 and 3,998.40 is: 5,996.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,861.77 : 20,790.37 = 3,998.40 : x
  2. Step 2: Convert to fraction form
    13,861.77/20,790.37 = 3,998.40/x
  3. Step 3: Cross multiply
    13,861.77x = 20,790.37 × 3,998.40
  4. Step 4: Simplify right side
    13,861.77x = 83,128,142.44
  5. Step 5: Solve for x
    x = 83,128,142.44/13,861.77
  6. Step 6: Final answer
    x = 5,996.94

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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.