Home / 21,272.80-29,356.94-11,842

Finding the Fourth Proportional to 21,272.80, 29,356.94 and 11,842

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Solution

The fourth proportional to 21,272.80, 29,356.94 and 11,842 is: 16,342.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.80 : 29,356.94 = 11,842 : x
  2. Step 2: Convert to fraction form
    21,272.80/29,356.94 = 11,842/x
  3. Step 3: Cross multiply
    21,272.80x = 29,356.94 × 11,842
  4. Step 4: Simplify right side
    21,272.80x = 347,644,883.48
  5. Step 5: Solve for x
    x = 347,644,883.48/21,272.80
  6. Step 6: Final answer
    x = 16,342.22

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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.