Home / 21,394.78-29,514.85-13,843.55

Finding the Fourth Proportional to 21,394.78, 29,514.85 and 13,843.55

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Solution

The fourth proportional to 21,394.78, 29,514.85 and 13,843.55 is: 19,097.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,394.78 : 29,514.85 = 13,843.55 : x
  2. Step 2: Convert to fraction form
    21,394.78/29,514.85 = 13,843.55/x
  3. Step 3: Cross multiply
    21,394.78x = 29,514.85 × 13,843.55
  4. Step 4: Simplify right side
    21,394.78x = 408,590,254.03
  5. Step 5: Solve for x
    x = 408,590,254.03/21,394.78
  6. Step 6: Final answer
    x = 19,097.66

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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.