Home / 20,563.27-28,382.00-13,380.53

Finding the Fourth Proportional to 20,563.27, 28,382.00 and 13,380.53

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Solution

The fourth proportional to 20,563.27, 28,382.00 and 13,380.53 is: 18,468.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.27 : 28,382.00 = 13,380.53 : x
  2. Step 2: Convert to fraction form
    20,563.27/28,382.00 = 13,380.53/x
  3. Step 3: Cross multiply
    20,563.27x = 28,382.00 × 13,380.53
  4. Step 4: Simplify right side
    20,563.27x = 379,765,993.65
  5. Step 5: Solve for x
    x = 379,765,993.65/20,563.27
  6. Step 6: Final answer
    x = 18,468.17

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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.