Home / 21,380.50-29,504.54-11,949.14

Finding the Fourth Proportional to 21,380.50, 29,504.54 and 11,949.14

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Solution

The fourth proportional to 21,380.50, 29,504.54 and 11,949.14 is: 16,489.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.50 : 29,504.54 = 11,949.14 : x
  2. Step 2: Convert to fraction form
    21,380.50/29,504.54 = 11,949.14/x
  3. Step 3: Cross multiply
    21,380.50x = 29,504.54 × 11,949.14
  4. Step 4: Simplify right side
    21,380.50x = 352,553,879.10
  5. Step 5: Solve for x
    x = 352,553,879.10/21,380.50
  6. Step 6: Final answer
    x = 16,489.51

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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.