Home / 28,902.88-43,363.07-20,485.68

Finding the Fourth Proportional to 28,902.88, 43,363.07 and 20,485.68

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Solution

The fourth proportional to 28,902.88, 43,363.07 and 20,485.68 is: 30,734.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,902.88 : 43,363.07 = 20,485.68 : x
  2. Step 2: Convert to fraction form
    28,902.88/43,363.07 = 20,485.68/x
  3. Step 3: Cross multiply
    28,902.88x = 43,363.07 × 20,485.68
  4. Step 4: Simplify right side
    28,902.88x = 888,321,975.84
  5. Step 5: Solve for x
    x = 888,321,975.84/28,902.88
  6. Step 6: Final answer
    x = 30,734.72

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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.