Home / 14,121.09-21,168.68-4,880.61

Finding the Fourth Proportional to 14,121.09, 21,168.68 and 4,880.61

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Solution

The fourth proportional to 14,121.09, 21,168.68 and 4,880.61 is: 7,316.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.09 : 21,168.68 = 4,880.61 : x
  2. Step 2: Convert to fraction form
    14,121.09/21,168.68 = 4,880.61/x
  3. Step 3: Cross multiply
    14,121.09x = 21,168.68 × 4,880.61
  4. Step 4: Simplify right side
    14,121.09x = 103,316,046.89
  5. Step 5: Solve for x
    x = 103,316,046.89/14,121.09
  6. Step 6: Final answer
    x = 7,316.44

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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.