Home / 18,378.72-27,604.53-15,745.21

Finding the Fourth Proportional to 18,378.72, 27,604.53 and 15,745.21

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Solution

The fourth proportional to 18,378.72, 27,604.53 and 15,745.21 is: 23,649.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.72 : 27,604.53 = 15,745.21 : x
  2. Step 2: Convert to fraction form
    18,378.72/27,604.53 = 15,745.21/x
  3. Step 3: Cross multiply
    18,378.72x = 27,604.53 × 15,745.21
  4. Step 4: Simplify right side
    18,378.72x = 434,639,052.79
  5. Step 5: Solve for x
    x = 434,639,052.79/18,378.72
  6. Step 6: Final answer
    x = 23,649.04

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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.