Home / 14,200.12-21,300.18-3,811.87

Finding the Fourth Proportional to 14,200.12, 21,300.18 and 3,811.87

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Solution

The fourth proportional to 14,200.12, 21,300.18 and 3,811.87 is: 5,717.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,200.12 : 21,300.18 = 3,811.87 : x
  2. Step 2: Convert to fraction form
    14,200.12/21,300.18 = 3,811.87/x
  3. Step 3: Cross multiply
    14,200.12x = 21,300.18 × 3,811.87
  4. Step 4: Simplify right side
    14,200.12x = 81,193,517.14
  5. Step 5: Solve for x
    x = 81,193,517.14/14,200.12
  6. Step 6: Final answer
    x = 5,717.81

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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.