Home / 20,134.85-30,195.43-7,651.87

Finding the Fourth Proportional to 20,134.85, 30,195.43 and 7,651.87

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Solution

The fourth proportional to 20,134.85, 30,195.43 and 7,651.87 is: 11,475.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.85 : 30,195.43 = 7,651.87 : x
  2. Step 2: Convert to fraction form
    20,134.85/30,195.43 = 7,651.87/x
  3. Step 3: Cross multiply
    20,134.85x = 30,195.43 × 7,651.87
  4. Step 4: Simplify right side
    20,134.85x = 231,051,410.34
  5. Step 5: Solve for x
    x = 231,051,410.34/20,134.85
  6. Step 6: Final answer
    x = 11,475.20

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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.