Home / 20,379.67-28,091.43-16,065.72

Finding the Fourth Proportional to 20,379.67, 28,091.43 and 16,065.72

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Solution

The fourth proportional to 20,379.67, 28,091.43 and 16,065.72 is: 22,145.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379.67 : 28,091.43 = 16,065.72 : x
  2. Step 2: Convert to fraction form
    20,379.67/28,091.43 = 16,065.72/x
  3. Step 3: Cross multiply
    20,379.67x = 28,091.43 × 16,065.72
  4. Step 4: Simplify right side
    20,379.67x = 451,309,214.37
  5. Step 5: Solve for x
    x = 451,309,214.37/20,379.67
  6. Step 6: Final answer
    x = 22,145.07

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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.