Home / 13,674.29-20,512.55-3,813.66

Finding the Fourth Proportional to 13,674.29, 20,512.55 and 3,813.66

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Solution

The fourth proportional to 13,674.29, 20,512.55 and 3,813.66 is: 5,720.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,674.29 : 20,512.55 = 3,813.66 : x
  2. Step 2: Convert to fraction form
    13,674.29/20,512.55 = 3,813.66/x
  3. Step 3: Cross multiply
    13,674.29x = 20,512.55 × 3,813.66
  4. Step 4: Simplify right side
    13,674.29x = 78,227,900.97
  5. Step 5: Solve for x
    x = 78,227,900.97/13,674.29
  6. Step 6: Final answer
    x = 5,720.80

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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.