Home / 15,200.28-20,975.70-8,485.75

Finding the Fourth Proportional to 15,200.28, 20,975.70 and 8,485.75

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Solution

The fourth proportional to 15,200.28, 20,975.70 and 8,485.75 is: 11,709.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.28 : 20,975.70 = 8,485.75 : x
  2. Step 2: Convert to fraction form
    15,200.28/20,975.70 = 8,485.75/x
  3. Step 3: Cross multiply
    15,200.28x = 20,975.70 × 8,485.75
  4. Step 4: Simplify right side
    15,200.28x = 177,994,546.28
  5. Step 5: Solve for x
    x = 177,994,546.28/15,200.28
  6. Step 6: Final answer
    x = 11,709.95

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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.