Home / 20,675.55-28,530.38-11,723.85

Finding the Fourth Proportional to 20,675.55, 28,530.38 and 11,723.85

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Solution

The fourth proportional to 20,675.55, 28,530.38 and 11,723.85 is: 16,177.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.55 : 28,530.38 = 11,723.85 : x
  2. Step 2: Convert to fraction form
    20,675.55/28,530.38 = 11,723.85/x
  3. Step 3: Cross multiply
    20,675.55x = 28,530.38 × 11,723.85
  4. Step 4: Simplify right side
    20,675.55x = 334,485,836.94
  5. Step 5: Solve for x
    x = 334,485,836.94/20,675.55
  6. Step 6: Final answer
    x = 16,177.84

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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.