Home / 13,801.49-20,701.82-3,940.79

Finding the Fourth Proportional to 13,801.49, 20,701.82 and 3,940.79

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Solution

The fourth proportional to 13,801.49, 20,701.82 and 3,940.79 is: 5,911.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801.49 : 20,701.82 = 3,940.79 : x
  2. Step 2: Convert to fraction form
    13,801.49/20,701.82 = 3,940.79/x
  3. Step 3: Cross multiply
    13,801.49x = 20,701.82 × 3,940.79
  4. Step 4: Simplify right side
    13,801.49x = 81,581,536.94
  5. Step 5: Solve for x
    x = 81,581,536.94/13,801.49
  6. Step 6: Final answer
    x = 5,911.07

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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.