Home / 21,380.48-29,502.84-11,949.92

Finding the Fourth Proportional to 21,380.48, 29,502.84 and 11,949.92

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Solution

The fourth proportional to 21,380.48, 29,502.84 and 11,949.92 is: 16,489.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.48 : 29,502.84 = 11,949.92 : x
  2. Step 2: Convert to fraction form
    21,380.48/29,502.84 = 11,949.92/x
  3. Step 3: Cross multiply
    21,380.48x = 29,502.84 × 11,949.92
  4. Step 4: Simplify right side
    21,380.48x = 352,556,577.77
  5. Step 5: Solve for x
    x = 352,556,577.77/21,380.48
  6. Step 6: Final answer
    x = 16,489.65

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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.