Home / 27,942.81-38,529.58-20,375.79

Finding the Fourth Proportional to 27,942.81, 38,529.58 and 20,375.79

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Solution

The fourth proportional to 27,942.81, 38,529.58 and 20,375.79 is: 28,095.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,942.81 : 38,529.58 = 20,375.79 : x
  2. Step 2: Convert to fraction form
    27,942.81/38,529.58 = 20,375.79/x
  3. Step 3: Cross multiply
    27,942.81x = 38,529.58 × 20,375.79
  4. Step 4: Simplify right side
    27,942.81x = 785,070,630.87
  5. Step 5: Solve for x
    x = 785,070,630.87/27,942.81
  6. Step 6: Final answer
    x = 28,095.62

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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.