Home / 19,021.77-28,517.20-7,936.72

Finding the Fourth Proportional to 19,021.77, 28,517.20 and 7,936.72

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Solution

The fourth proportional to 19,021.77, 28,517.20 and 7,936.72 is: 11,898.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,021.77 : 28,517.20 = 7,936.72 : x
  2. Step 2: Convert to fraction form
    19,021.77/28,517.20 = 7,936.72/x
  3. Step 3: Cross multiply
    19,021.77x = 28,517.20 × 7,936.72
  4. Step 4: Simplify right side
    19,021.77x = 226,332,849.31
  5. Step 5: Solve for x
    x = 226,332,849.31/19,021.77
  6. Step 6: Final answer
    x = 11,898.62

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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.