Home / 20,046.06-27,631.70-15,790.38

Finding the Fourth Proportional to 20,046.06, 27,631.70 and 15,790.38

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Solution

The fourth proportional to 20,046.06, 27,631.70 and 15,790.38 is: 21,765.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,046.06 : 27,631.70 = 15,790.38 : x
  2. Step 2: Convert to fraction form
    20,046.06/27,631.70 = 15,790.38/x
  3. Step 3: Cross multiply
    20,046.06x = 27,631.70 × 15,790.38
  4. Step 4: Simplify right side
    20,046.06x = 436,315,072.65
  5. Step 5: Solve for x
    x = 436,315,072.65/20,046.06
  6. Step 6: Final answer
    x = 21,765.62

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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.