Home / 20,382.76-28,183.71-17,758.36

Finding the Fourth Proportional to 20,382.76, 28,183.71 and 17,758.36

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Solution

The fourth proportional to 20,382.76, 28,183.71 and 17,758.36 is: 24,554.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.76 : 28,183.71 = 17,758.36 : x
  2. Step 2: Convert to fraction form
    20,382.76/28,183.71 = 17,758.36/x
  3. Step 3: Cross multiply
    20,382.76x = 28,183.71 × 17,758.36
  4. Step 4: Simplify right side
    20,382.76x = 500,496,468.32
  5. Step 5: Solve for x
    x = 500,496,468.32/20,382.76
  6. Step 6: Final answer
    x = 24,554.89

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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.