Home / 20,678.72-30,993.42-14,404.76

Finding the Fourth Proportional to 20,678.72, 30,993.42 and 14,404.76

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Solution

The fourth proportional to 20,678.72, 30,993.42 and 14,404.76 is: 21,589.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.72 : 30,993.42 = 14,404.76 : x
  2. Step 2: Convert to fraction form
    20,678.72/30,993.42 = 14,404.76/x
  3. Step 3: Cross multiply
    20,678.72x = 30,993.42 × 14,404.76
  4. Step 4: Simplify right side
    20,678.72x = 446,452,776.68
  5. Step 5: Solve for x
    x = 446,452,776.68/20,678.72
  6. Step 6: Final answer
    x = 21,589.96

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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.