Home / 18,378.85-27,568.44-5,231.21

Finding the Fourth Proportional to 18,378.85, 27,568.44 and 5,231.21

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Solution

The fourth proportional to 18,378.85, 27,568.44 and 5,231.21 is: 7,846.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.85 : 27,568.44 = 5,231.21 : x
  2. Step 2: Convert to fraction form
    18,378.85/27,568.44 = 5,231.21/x
  3. Step 3: Cross multiply
    18,378.85x = 27,568.44 × 5,231.21
  4. Step 4: Simplify right side
    18,378.85x = 144,216,354.86
  5. Step 5: Solve for x
    x = 144,216,354.86/18,378.85
  6. Step 6: Final answer
    x = 7,846.87

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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.