Home / 21,508.68-29,682.36-11,949.43

Finding the Fourth Proportional to 21,508.68, 29,682.36 and 11,949.43

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Solution

The fourth proportional to 21,508.68, 29,682.36 and 11,949.43 is: 16,490.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,508.68 : 29,682.36 = 11,949.43 : x
  2. Step 2: Convert to fraction form
    21,508.68/29,682.36 = 11,949.43/x
  3. Step 3: Cross multiply
    21,508.68x = 29,682.36 × 11,949.43
  4. Step 4: Simplify right side
    21,508.68x = 354,687,283.05
  5. Step 5: Solve for x
    x = 354,687,283.05/21,508.68
  6. Step 6: Final answer
    x = 16,490.43

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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.