Home / 14,100-21,151.20-3,711.78

Finding the Fourth Proportional to 14,100, 21,151.20 and 3,711.78

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Solution

The fourth proportional to 14,100, 21,151.20 and 3,711.78 is: 5,567.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,100 : 21,151.20 = 3,711.78 : x
  2. Step 2: Convert to fraction form
    14,100/21,151.20 = 3,711.78/x
  3. Step 3: Cross multiply
    14,100x = 21,151.20 × 3,711.78
  4. Step 4: Simplify right side
    14,100x = 78,508,601.14
  5. Step 5: Solve for x
    x = 78,508,601.14/14,100
  6. Step 6: Final answer
    x = 5,567.99

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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.