Home / 20,165.72-30,250.80-5,375.12

Finding the Fourth Proportional to 20,165.72, 30,250.80 and 5,375.12

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Solution

The fourth proportional to 20,165.72, 30,250.80 and 5,375.12 is: 8,063.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.72 : 30,250.80 = 5,375.12 : x
  2. Step 2: Convert to fraction form
    20,165.72/30,250.80 = 5,375.12/x
  3. Step 3: Cross multiply
    20,165.72x = 30,250.80 × 5,375.12
  4. Step 4: Simplify right side
    20,165.72x = 162,601,680.10
  5. Step 5: Solve for x
    x = 162,601,680.10/20,165.72
  6. Step 6: Final answer
    x = 8,063.27

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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.