Home / 13,855.70-20,783.61-3,995.18

Finding the Fourth Proportional to 13,855.70, 20,783.61 and 3,995.18

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Solution

The fourth proportional to 13,855.70, 20,783.61 and 3,995.18 is: 5,992.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.70 : 20,783.61 = 3,995.18 : x
  2. Step 2: Convert to fraction form
    13,855.70/20,783.61 = 3,995.18/x
  3. Step 3: Cross multiply
    13,855.70x = 20,783.61 × 3,995.18
  4. Step 4: Simplify right side
    13,855.70x = 83,034,263.00
  5. Step 5: Solve for x
    x = 83,034,263.00/13,855.70
  6. Step 6: Final answer
    x = 5,992.79

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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.