Home / 21,289.42-31,957.62-12,414.25

Finding the Fourth Proportional to 21,289.42, 31,957.62 and 12,414.25

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Solution

The fourth proportional to 21,289.42, 31,957.62 and 12,414.25 is: 18,635.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.42 : 31,957.62 = 12,414.25 : x
  2. Step 2: Convert to fraction form
    21,289.42/31,957.62 = 12,414.25/x
  3. Step 3: Cross multiply
    21,289.42x = 31,957.62 × 12,414.25
  4. Step 4: Simplify right side
    21,289.42x = 396,729,884.09
  5. Step 5: Solve for x
    x = 396,729,884.09/21,289.42
  6. Step 6: Final answer
    x = 18,635.07

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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.