Home / 30,186.68-45,273.55-18,936.59

Finding the Fourth Proportional to 30,186.68, 45,273.55 and 18,936.59

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Solution

The fourth proportional to 30,186.68, 45,273.55 and 18,936.59 is: 28,400.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,186.68 : 45,273.55 = 18,936.59 : x
  2. Step 2: Convert to fraction form
    30,186.68/45,273.55 = 18,936.59/x
  3. Step 3: Cross multiply
    30,186.68x = 45,273.55 × 18,936.59
  4. Step 4: Simplify right side
    30,186.68x = 857,326,654.19
  5. Step 5: Solve for x
    x = 857,326,654.19/30,186.68
  6. Step 6: Final answer
    x = 28,400.83

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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.