Home / 30,318.39-45,481.23-28,659.51

Finding the Fourth Proportional to 30,318.39, 45,481.23 and 28,659.51

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Solution

The fourth proportional to 30,318.39, 45,481.23 and 28,659.51 is: 42,992.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,318.39 : 45,481.23 = 28,659.51 : x
  2. Step 2: Convert to fraction form
    30,318.39/45,481.23 = 28,659.51/x
  3. Step 3: Cross multiply
    30,318.39x = 45,481.23 × 28,659.51
  4. Step 4: Simplify right side
    30,318.39x = 1,303,469,766.00
  5. Step 5: Solve for x
    x = 1,303,469,766.00/30,318.39
  6. Step 6: Final answer
    x = 42,992.71

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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.