Home / 13,674.81-20,512.38-3,813.49

Finding the Fourth Proportional to 13,674.81, 20,512.38 and 3,813.49

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Solution

The fourth proportional to 13,674.81, 20,512.38 and 3,813.49 is: 5,720.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,674.81 : 20,512.38 = 3,813.49 : x
  2. Step 2: Convert to fraction form
    13,674.81/20,512.38 = 3,813.49/x
  3. Step 3: Cross multiply
    13,674.81x = 20,512.38 × 3,813.49
  4. Step 4: Simplify right side
    13,674.81x = 78,223,664.78
  5. Step 5: Solve for x
    x = 78,223,664.78/13,674.81
  6. Step 6: Final answer
    x = 5,720.27

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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.