Home / 13,857.93-20,797.43-5,425.83

Finding the Fourth Proportional to 13,857.93, 20,797.43 and 5,425.83

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Solution

The fourth proportional to 13,857.93, 20,797.43 and 5,425.83 is: 8,142.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.93 : 20,797.43 = 5,425.83 : x
  2. Step 2: Convert to fraction form
    13,857.93/20,797.43 = 5,425.83/x
  3. Step 3: Cross multiply
    13,857.93x = 20,797.43 × 5,425.83
  4. Step 4: Simplify right side
    13,857.93x = 112,843,292.49
  5. Step 5: Solve for x
    x = 112,843,292.49/13,857.93
  6. Step 6: Final answer
    x = 8,142.87

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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.