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Finding the Fourth Proportional to 28,200.62, 38,917.24 and 18,132.37

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Solution

The fourth proportional to 28,200.62, 38,917.24 and 18,132.37 is: 25,022.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.62 : 38,917.24 = 18,132.37 : x
  2. Step 2: Convert to fraction form
    28,200.62/38,917.24 = 18,132.37/x
  3. Step 3: Cross multiply
    28,200.62x = 38,917.24 × 18,132.37
  4. Step 4: Simplify right side
    28,200.62x = 705,661,652.43
  5. Step 5: Solve for x
    x = 705,661,652.43/28,200.62
  6. Step 6: Final answer
    x = 25,022.91

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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.