Home / 20,571.12-30,844.80-18,110.88

Finding the Fourth Proportional to 20,571.12, 30,844.80 and 18,110.88

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Solution

The fourth proportional to 20,571.12, 30,844.80 and 18,110.88 is: 27,155.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.12 : 30,844.80 = 18,110.88 : x
  2. Step 2: Convert to fraction form
    20,571.12/30,844.80 = 18,110.88/x
  3. Step 3: Cross multiply
    20,571.12x = 30,844.80 × 18,110.88
  4. Step 4: Simplify right side
    20,571.12x = 558,626,471.42
  5. Step 5: Solve for x
    x = 558,626,471.42/20,571.12
  6. Step 6: Final answer
    x = 27,155.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.