Home / 18,315.85-27,473.91-12,115.03

Finding the Fourth Proportional to 18,315.85, 27,473.91 and 12,115.03

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Solution

The fourth proportional to 18,315.85, 27,473.91 and 12,115.03 is: 18,172.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.85 : 27,473.91 = 12,115.03 : x
  2. Step 2: Convert to fraction form
    18,315.85/27,473.91 = 12,115.03/x
  3. Step 3: Cross multiply
    18,315.85x = 27,473.91 × 12,115.03
  4. Step 4: Simplify right side
    18,315.85x = 332,847,243.87
  5. Step 5: Solve for x
    x = 332,847,243.87/18,315.85
  6. Step 6: Final answer
    x = 18,172.63

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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.