Home / 13,800.96-20,701.71-3,940.56

Finding the Fourth Proportional to 13,800.96, 20,701.71 and 3,940.56

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Solution

The fourth proportional to 13,800.96, 20,701.71 and 3,940.56 is: 5,910.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,800.96 : 20,701.71 = 3,940.56 : x
  2. Step 2: Convert to fraction form
    13,800.96/20,701.71 = 3,940.56/x
  3. Step 3: Cross multiply
    13,800.96x = 20,701.71 × 3,940.56
  4. Step 4: Simplify right side
    13,800.96x = 81,576,330.36
  5. Step 5: Solve for x
    x = 81,576,330.36/13,800.96
  6. Step 6: Final answer
    x = 5,910.92

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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.