Home / 14,121.62-21,175.70-5,230.86

Finding the Fourth Proportional to 14,121.62, 21,175.70 and 5,230.86

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Solution

The fourth proportional to 14,121.62, 21,175.70 and 5,230.86 is: 7,843.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.62 : 21,175.70 = 5,230.86 : x
  2. Step 2: Convert to fraction form
    14,121.62/21,175.70 = 5,230.86/x
  3. Step 3: Cross multiply
    14,121.62x = 21,175.70 × 5,230.86
  4. Step 4: Simplify right side
    14,121.62x = 110,767,122.10
  5. Step 5: Solve for x
    x = 110,767,122.10/14,121.62
  6. Step 6: Final answer
    x = 7,843.80

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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.