Home / 28,380.15-39,147.17-17,628.75

Finding the Fourth Proportional to 28,380.15, 39,147.17 and 17,628.75

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Solution

The fourth proportional to 28,380.15, 39,147.17 and 17,628.75 is: 24,316.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,380.15 : 39,147.17 = 17,628.75 : x
  2. Step 2: Convert to fraction form
    28,380.15/39,147.17 = 17,628.75/x
  3. Step 3: Cross multiply
    28,380.15x = 39,147.17 × 17,628.75
  4. Step 4: Simplify right side
    28,380.15x = 690,115,584.99
  5. Step 5: Solve for x
    x = 690,115,584.99/28,380.15
  6. Step 6: Final answer
    x = 24,316.84

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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.