Home / 21,147.26-29,180.97-11,714.90

Finding the Fourth Proportional to 21,147.26, 29,180.97 and 11,714.90

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Solution

The fourth proportional to 21,147.26, 29,180.97 and 11,714.90 is: 16,165.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.26 : 29,180.97 = 11,714.90 : x
  2. Step 2: Convert to fraction form
    21,147.26/29,180.97 = 11,714.90/x
  3. Step 3: Cross multiply
    21,147.26x = 29,180.97 × 11,714.90
  4. Step 4: Simplify right side
    21,147.26x = 341,852,145.45
  5. Step 5: Solve for x
    x = 341,852,145.45/21,147.26
  6. Step 6: Final answer
    x = 16,165.32

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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.