Home / 28,580.20-39,440.84-15,833.78

Finding the Fourth Proportional to 28,580.20, 39,440.84 and 15,833.78

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Solution

The fourth proportional to 28,580.20, 39,440.84 and 15,833.78 is: 21,850.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,580.20 : 39,440.84 = 15,833.78 : x
  2. Step 2: Convert to fraction form
    28,580.20/39,440.84 = 15,833.78/x
  3. Step 3: Cross multiply
    28,580.20x = 39,440.84 × 15,833.78
  4. Step 4: Simplify right side
    28,580.20x = 624,497,504.41
  5. Step 5: Solve for x
    x = 624,497,504.41/28,580.20
  6. Step 6: Final answer
    x = 21,850.71

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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.