Home / 27,311.99-37,687.93-20,145.80

Finding the Fourth Proportional to 27,311.99, 37,687.93 and 20,145.80

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Solution

The fourth proportional to 27,311.99, 37,687.93 and 20,145.80 is: 27,799.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,311.99 : 37,687.93 = 20,145.80 : x
  2. Step 2: Convert to fraction form
    27,311.99/37,687.93 = 20,145.80/x
  3. Step 3: Cross multiply
    27,311.99x = 37,687.93 × 20,145.80
  4. Step 4: Simplify right side
    27,311.99x = 759,253,604.37
  5. Step 5: Solve for x
    x = 759,253,604.37/27,311.99
  6. Step 6: Final answer
    x = 27,799.28

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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.