Home / 20,072.76-27,700.26-11,120.88

Finding the Fourth Proportional to 20,072.76, 27,700.26 and 11,120.88

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Solution

The fourth proportional to 20,072.76, 27,700.26 and 11,120.88 is: 15,346.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.76 : 27,700.26 = 11,120.88 : x
  2. Step 2: Convert to fraction form
    20,072.76/27,700.26 = 11,120.88/x
  3. Step 3: Cross multiply
    20,072.76x = 27,700.26 × 11,120.88
  4. Step 4: Simplify right side
    20,072.76x = 308,051,267.43
  5. Step 5: Solve for x
    x = 308,051,267.43/20,072.76
  6. Step 6: Final answer
    x = 15,346.73

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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.