Home / 21,317.68-29,418.37-11,758.18

Finding the Fourth Proportional to 21,317.68, 29,418.37 and 11,758.18

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Solution

The fourth proportional to 21,317.68, 29,418.37 and 11,758.18 is: 16,226.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.68 : 29,418.37 = 11,758.18 : x
  2. Step 2: Convert to fraction form
    21,317.68/29,418.37 = 11,758.18/x
  3. Step 3: Cross multiply
    21,317.68x = 29,418.37 × 11,758.18
  4. Step 4: Simplify right side
    21,317.68x = 345,906,508.12
  5. Step 5: Solve for x
    x = 345,906,508.12/21,317.68
  6. Step 6: Final answer
    x = 16,226.27

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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.