Home / 20,107.63-30,156.85-7,629.04

Finding the Fourth Proportional to 20,107.63, 30,156.85 and 7,629.04

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Solution

The fourth proportional to 20,107.63, 30,156.85 and 7,629.04 is: 11,441.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.63 : 30,156.85 = 7,629.04 : x
  2. Step 2: Convert to fraction form
    20,107.63/30,156.85 = 7,629.04/x
  3. Step 3: Cross multiply
    20,107.63x = 30,156.85 × 7,629.04
  4. Step 4: Simplify right side
    20,107.63x = 230,067,814.92
  5. Step 5: Solve for x
    x = 230,067,814.92/20,107.63
  6. Step 6: Final answer
    x = 11,441.82

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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.