Home / 21,067.26-29,072.56-12,114.79

Finding the Fourth Proportional to 21,067.26, 29,072.56 and 12,114.79

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Solution

The fourth proportional to 21,067.26, 29,072.56 and 12,114.79 is: 16,718.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.26 : 29,072.56 = 12,114.79 : x
  2. Step 2: Convert to fraction form
    21,067.26/29,072.56 = 12,114.79/x
  3. Step 3: Cross multiply
    21,067.26x = 29,072.56 × 12,114.79
  4. Step 4: Simplify right side
    21,067.26x = 352,207,959.16
  5. Step 5: Solve for x
    x = 352,207,959.16/21,067.26
  6. Step 6: Final answer
    x = 16,718.26

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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.