Home / 20,121.08-27,770.40-11,737.56

Finding the Fourth Proportional to 20,121.08, 27,770.40 and 11,737.56

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Solution

The fourth proportional to 20,121.08, 27,770.40 and 11,737.56 is: 16,199.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.08 : 27,770.40 = 11,737.56 : x
  2. Step 2: Convert to fraction form
    20,121.08/27,770.40 = 11,737.56/x
  3. Step 3: Cross multiply
    20,121.08x = 27,770.40 × 11,737.56
  4. Step 4: Simplify right side
    20,121.08x = 325,956,736.22
  5. Step 5: Solve for x
    x = 325,956,736.22/20,121.08
  6. Step 6: Final answer
    x = 16,199.76

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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.