Home / 30,520.20-45,766.20-13,879.56

Finding the Fourth Proportional to 30,520.20, 45,766.20 and 13,879.56

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Solution

The fourth proportional to 30,520.20, 45,766.20 and 13,879.56 is: 20,812.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,520.20 : 45,766.20 = 13,879.56 : x
  2. Step 2: Convert to fraction form
    30,520.20/45,766.20 = 13,879.56/x
  3. Step 3: Cross multiply
    30,520.20x = 45,766.20 × 13,879.56
  4. Step 4: Simplify right side
    30,520.20x = 635,214,718.87
  5. Step 5: Solve for x
    x = 635,214,718.87/30,520.20
  6. Step 6: Final answer
    x = 20,812.93

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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.