Home / 20,716.74-31,063.11-14,150.86

Finding the Fourth Proportional to 20,716.74, 31,063.11 and 14,150.86

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Solution

The fourth proportional to 20,716.74, 31,063.11 and 14,150.86 is: 21,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.74 : 31,063.11 = 14,150.86 : x
  2. Step 2: Convert to fraction form
    20,716.74/31,063.11 = 14,150.86/x
  3. Step 3: Cross multiply
    20,716.74x = 31,063.11 × 14,150.86
  4. Step 4: Simplify right side
    20,716.74x = 439,569,720.77
  5. Step 5: Solve for x
    x = 439,569,720.77/20,716.74
  6. Step 6: Final answer
    x = 21,218.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.