Home / 21,508.96-29,682.66-11,949.07

Finding the Fourth Proportional to 21,508.96, 29,682.66 and 11,949.07

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Solution

The fourth proportional to 21,508.96, 29,682.66 and 11,949.07 is: 16,489.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,508.96 : 29,682.66 = 11,949.07 : x
  2. Step 2: Convert to fraction form
    21,508.96/29,682.66 = 11,949.07/x
  3. Step 3: Cross multiply
    21,508.96x = 29,682.66 × 11,949.07
  4. Step 4: Simplify right side
    21,508.96x = 354,680,182.13
  5. Step 5: Solve for x
    x = 354,680,182.13/21,508.96
  6. Step 6: Final answer
    x = 16,489.88

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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.