Home / 21,380.43-29,505.03-11,948.99

Finding the Fourth Proportional to 21,380.43, 29,505.03 and 11,948.99

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Solution

The fourth proportional to 21,380.43, 29,505.03 and 11,948.99 is: 16,489.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.43 : 29,505.03 = 11,948.99 : x
  2. Step 2: Convert to fraction form
    21,380.43/29,505.03 = 11,948.99/x
  3. Step 3: Cross multiply
    21,380.43x = 29,505.03 × 11,948.99
  4. Step 4: Simplify right side
    21,380.43x = 352,555,160.89
  5. Step 5: Solve for x
    x = 352,555,160.89/21,380.43
  6. Step 6: Final answer
    x = 16,489.62

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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.