Home / 21,416.31-29,553.88-11,856.58

Finding the Fourth Proportional to 21,416.31, 29,553.88 and 11,856.58

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Solution

The fourth proportional to 21,416.31, 29,553.88 and 11,856.58 is: 16,361.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,416.31 : 29,553.88 = 11,856.58 : x
  2. Step 2: Convert to fraction form
    21,416.31/29,553.88 = 11,856.58/x
  3. Step 3: Cross multiply
    21,416.31x = 29,553.88 × 11,856.58
  4. Step 4: Simplify right side
    21,416.31x = 350,407,942.53
  5. Step 5: Solve for x
    x = 350,407,942.53/21,416.31
  6. Step 6: Final answer
    x = 16,361.73

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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.