Home / 21,314.27-29,412.61-11,755.82

Finding the Fourth Proportional to 21,314.27, 29,412.61 and 11,755.82

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Solution

The fourth proportional to 21,314.27, 29,412.61 and 11,755.82 is: 16,222.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.27 : 29,412.61 = 11,755.82 : x
  2. Step 2: Convert to fraction form
    21,314.27/29,412.61 = 11,755.82/x
  3. Step 3: Cross multiply
    21,314.27x = 29,412.61 × 11,755.82
  4. Step 4: Simplify right side
    21,314.27x = 345,769,172.44
  5. Step 5: Solve for x
    x = 345,769,172.44/21,314.27
  6. Step 6: Final answer
    x = 16,222.43

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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.