Home / 30,168.07-45,249.82-12,393.89

Finding the Fourth Proportional to 30,168.07, 45,249.82 and 12,393.89

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Solution

The fourth proportional to 30,168.07, 45,249.82 and 12,393.89 is: 18,589.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,168.07 : 45,249.82 = 12,393.89 : x
  2. Step 2: Convert to fraction form
    30,168.07/45,249.82 = 12,393.89/x
  3. Step 3: Cross multiply
    30,168.07x = 45,249.82 × 12,393.89
  4. Step 4: Simplify right side
    30,168.07x = 560,821,003.38
  5. Step 5: Solve for x
    x = 560,821,003.38/30,168.07
  6. Step 6: Final answer
    x = 18,589.89

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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.