Home / 13,857.36-20,789.12-3,995.87

Finding the Fourth Proportional to 13,857.36, 20,789.12 and 3,995.87

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Solution

The fourth proportional to 13,857.36, 20,789.12 and 3,995.87 is: 5,994.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.36 : 20,789.12 = 3,995.87 : x
  2. Step 2: Convert to fraction form
    13,857.36/20,789.12 = 3,995.87/x
  3. Step 3: Cross multiply
    13,857.36x = 20,789.12 × 3,995.87
  4. Step 4: Simplify right side
    13,857.36x = 83,070,620.93
  5. Step 5: Solve for x
    x = 83,070,620.93/13,857.36
  6. Step 6: Final answer
    x = 5,994.69

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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.