Home / 20,262.38-27,950.40-12,190.44

Finding the Fourth Proportional to 20,262.38, 27,950.40 and 12,190.44

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Solution

The fourth proportional to 20,262.38, 27,950.40 and 12,190.44 is: 16,815.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,262.38 : 27,950.40 = 12,190.44 : x
  2. Step 2: Convert to fraction form
    20,262.38/27,950.40 = 12,190.44/x
  3. Step 3: Cross multiply
    20,262.38x = 27,950.40 × 12,190.44
  4. Step 4: Simplify right side
    20,262.38x = 340,727,674.18
  5. Step 5: Solve for x
    x = 340,727,674.18/20,262.38
  6. Step 6: Final answer
    x = 16,815.78

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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.