Home / 20,958.96-31,438.83-16,779.56

Finding the Fourth Proportional to 20,958.96, 31,438.83 and 16,779.56

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Solution

The fourth proportional to 20,958.96, 31,438.83 and 16,779.56 is: 25,169.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.96 : 31,438.83 = 16,779.56 : x
  2. Step 2: Convert to fraction form
    20,958.96/31,438.83 = 16,779.56/x
  3. Step 3: Cross multiply
    20,958.96x = 31,438.83 × 16,779.56
  4. Step 4: Simplify right side
    20,958.96x = 527,529,734.31
  5. Step 5: Solve for x
    x = 527,529,734.31/20,958.96
  6. Step 6: Final answer
    x = 25,169.65

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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.