Home / 14,121.81-21,183.89-7,098.21

Finding the Fourth Proportional to 14,121.81, 21,183.89 and 7,098.21

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Solution

The fourth proportional to 14,121.81, 21,183.89 and 7,098.21 is: 10,647.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.81 : 21,183.89 = 7,098.21 : x
  2. Step 2: Convert to fraction form
    14,121.81/21,183.89 = 7,098.21/x
  3. Step 3: Cross multiply
    14,121.81x = 21,183.89 × 7,098.21
  4. Step 4: Simplify right side
    14,121.81x = 150,367,664.35
  5. Step 5: Solve for x
    x = 150,367,664.35/14,121.81
  6. Step 6: Final answer
    x = 10,647.90

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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.