Home / 21,168.86-29,213.48-11,608.97

Finding the Fourth Proportional to 21,168.86, 29,213.48 and 11,608.97

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Solution

The fourth proportional to 21,168.86, 29,213.48 and 11,608.97 is: 16,020.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.86 : 29,213.48 = 11,608.97 : x
  2. Step 2: Convert to fraction form
    21,168.86/29,213.48 = 11,608.97/x
  3. Step 3: Cross multiply
    21,168.86x = 29,213.48 × 11,608.97
  4. Step 4: Simplify right side
    21,168.86x = 339,138,412.92
  5. Step 5: Solve for x
    x = 339,138,412.92/21,168.86
  6. Step 6: Final answer
    x = 16,020.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.