Home / 20,350.98-30,479.08-19,790.43

Finding the Fourth Proportional to 20,350.98, 30,479.08 and 19,790.43

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Solution

The fourth proportional to 20,350.98, 30,479.08 and 19,790.43 is: 29,639.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.98 : 30,479.08 = 19,790.43 : x
  2. Step 2: Convert to fraction form
    20,350.98/30,479.08 = 19,790.43/x
  3. Step 3: Cross multiply
    20,350.98x = 30,479.08 × 19,790.43
  4. Step 4: Simplify right side
    20,350.98x = 603,193,847.86
  5. Step 5: Solve for x
    x = 603,193,847.86/20,350.98
  6. Step 6: Final answer
    x = 29,639.56

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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.