Home / 21,183.80-29,174.46-20,724.62

Finding the Fourth Proportional to 21,183.80, 29,174.46 and 20,724.62

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Solution

The fourth proportional to 21,183.80, 29,174.46 and 20,724.62 is: 28,542.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.80 : 29,174.46 = 20,724.62 : x
  2. Step 2: Convert to fraction form
    21,183.80/29,174.46 = 20,724.62/x
  3. Step 3: Cross multiply
    21,183.80x = 29,174.46 × 20,724.62
  4. Step 4: Simplify right side
    21,183.80x = 604,629,597.21
  5. Step 5: Solve for x
    x = 604,629,597.21/21,183.80
  6. Step 6: Final answer
    x = 28,542.07

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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.