Home / 14,651.81-21,979.01-4,121.92

Finding the Fourth Proportional to 14,651.81, 21,979.01 and 4,121.92

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Solution

The fourth proportional to 14,651.81, 21,979.01 and 4,121.92 is: 6,183.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,651.81 : 21,979.01 = 4,121.92 : x
  2. Step 2: Convert to fraction form
    14,651.81/21,979.01 = 4,121.92/x
  3. Step 3: Cross multiply
    14,651.81x = 21,979.01 × 4,121.92
  4. Step 4: Simplify right side
    14,651.81x = 90,595,720.90
  5. Step 5: Solve for x
    x = 90,595,720.90/14,651.81
  6. Step 6: Final answer
    x = 6,183.24

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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.