Home / 21,042.39-29,039.06-11,969.25

Finding the Fourth Proportional to 21,042.39, 29,039.06 and 11,969.25

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Solution

The fourth proportional to 21,042.39, 29,039.06 and 11,969.25 is: 16,517.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.39 : 29,039.06 = 11,969.25 : x
  2. Step 2: Convert to fraction form
    21,042.39/29,039.06 = 11,969.25/x
  3. Step 3: Cross multiply
    21,042.39x = 29,039.06 × 11,969.25
  4. Step 4: Simplify right side
    21,042.39x = 347,575,768.91
  5. Step 5: Solve for x
    x = 347,575,768.91/21,042.39
  6. Step 6: Final answer
    x = 16,517.88

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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.