Home / 28,538.43-39,380.90-15,960.75

Finding the Fourth Proportional to 28,538.43, 39,380.90 and 15,960.75

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Solution

The fourth proportional to 28,538.43, 39,380.90 and 15,960.75 is: 22,024.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.43 : 39,380.90 = 15,960.75 : x
  2. Step 2: Convert to fraction form
    28,538.43/39,380.90 = 15,960.75/x
  3. Step 3: Cross multiply
    28,538.43x = 39,380.90 × 15,960.75
  4. Step 4: Simplify right side
    28,538.43x = 628,548,619.87
  5. Step 5: Solve for x
    x = 628,548,619.87/28,538.43
  6. Step 6: Final answer
    x = 22,024.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.