Home / 13,669.88-20,504.86-3,809.20

Finding the Fourth Proportional to 13,669.88, 20,504.86 and 3,809.20

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Solution

The fourth proportional to 13,669.88, 20,504.86 and 3,809.20 is: 5,713.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,669.88 : 20,504.86 = 3,809.20 : x
  2. Step 2: Convert to fraction form
    13,669.88/20,504.86 = 3,809.20/x
  3. Step 3: Cross multiply
    13,669.88x = 20,504.86 × 3,809.20
  4. Step 4: Simplify right side
    13,669.88x = 78,107,112.71
  5. Step 5: Solve for x
    x = 78,107,112.71/13,669.88
  6. Step 6: Final answer
    x = 5,713.81

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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.