Home / 13,908.97-20,863.46-3,378.93

Finding the Fourth Proportional to 13,908.97, 20,863.46 and 3,378.93

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Solution

The fourth proportional to 13,908.97, 20,863.46 and 3,378.93 is: 5,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.97 : 20,863.46 = 3,378.93 : x
  2. Step 2: Convert to fraction form
    13,908.97/20,863.46 = 3,378.93/x
  3. Step 3: Cross multiply
    13,908.97x = 20,863.46 × 3,378.93
  4. Step 4: Simplify right side
    13,908.97x = 70,496,170.90
  5. Step 5: Solve for x
    x = 70,496,170.90/13,908.97
  6. Step 6: Final answer
    x = 5,068.40

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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.