Home / 12,105.52-18,157.93-3,789.45

Finding the Fourth Proportional to 12,105.52, 18,157.93 and 3,789.45

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Solution

The fourth proportional to 12,105.52, 18,157.93 and 3,789.45 is: 5,684.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,105.52 : 18,157.93 = 3,789.45 : x
  2. Step 2: Convert to fraction form
    12,105.52/18,157.93 = 3,789.45/x
  3. Step 3: Cross multiply
    12,105.52x = 18,157.93 × 3,789.45
  4. Step 4: Simplify right side
    12,105.52x = 68,808,558.36
  5. Step 5: Solve for x
    x = 68,808,558.36/12,105.52
  6. Step 6: Final answer
    x = 5,684.07

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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.