Home / 21,310.59-29,408.62-11,879.16

Finding the Fourth Proportional to 21,310.59, 29,408.62 and 11,879.16

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Solution

The fourth proportional to 21,310.59, 29,408.62 and 11,879.16 is: 16,393.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.59 : 29,408.62 = 11,879.16 : x
  2. Step 2: Convert to fraction form
    21,310.59/29,408.62 = 11,879.16/x
  3. Step 3: Cross multiply
    21,310.59x = 29,408.62 × 11,879.16
  4. Step 4: Simplify right side
    21,310.59x = 349,349,584.65
  5. Step 5: Solve for x
    x = 349,349,584.65/21,310.59
  6. Step 6: Final answer
    x = 16,393.24

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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.