Home / 21,568.91-29,764.53-12,008.81

Finding the Fourth Proportional to 21,568.91, 29,764.53 and 12,008.81

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Solution

The fourth proportional to 21,568.91, 29,764.53 and 12,008.81 is: 16,571.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,568.91 : 29,764.53 = 12,008.81 : x
  2. Step 2: Convert to fraction form
    21,568.91/29,764.53 = 12,008.81/x
  3. Step 3: Cross multiply
    21,568.91x = 29,764.53 × 12,008.81
  4. Step 4: Simplify right side
    21,568.91x = 357,436,659.92
  5. Step 5: Solve for x
    x = 357,436,659.92/21,568.91
  6. Step 6: Final answer
    x = 16,571.85

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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.