Home / 14,144.70-21,212.13-7,122

Finding the Fourth Proportional to 14,144.70, 21,212.13 and 7,122

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Solution

The fourth proportional to 14,144.70, 21,212.13 and 7,122 is: 10,680.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,144.70 : 21,212.13 = 7,122 : x
  2. Step 2: Convert to fraction form
    14,144.70/21,212.13 = 7,122/x
  3. Step 3: Cross multiply
    14,144.70x = 21,212.13 × 7,122
  4. Step 4: Simplify right side
    14,144.70x = 151,072,789.86
  5. Step 5: Solve for x
    x = 151,072,789.86/14,144.70
  6. Step 6: Final answer
    x = 10,680.52

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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.