Home / 19,571.87-27,008.84-11,912.38

Finding the Fourth Proportional to 19,571.87, 27,008.84 and 11,912.38

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Solution

The fourth proportional to 19,571.87, 27,008.84 and 11,912.38 is: 16,438.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,571.87 : 27,008.84 = 11,912.38 : x
  2. Step 2: Convert to fraction form
    19,571.87/27,008.84 = 11,912.38/x
  3. Step 3: Cross multiply
    19,571.87x = 27,008.84 × 11,912.38
  4. Step 4: Simplify right side
    19,571.87x = 321,739,430.40
  5. Step 5: Solve for x
    x = 321,739,430.40/19,571.87
  6. Step 6: Final answer
    x = 16,438.87

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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.