Home / 20,881.94-31,305.31-14,291.86

Finding the Fourth Proportional to 20,881.94, 31,305.31 and 14,291.86

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Solution

The fourth proportional to 20,881.94, 31,305.31 and 14,291.86 is: 21,425.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.94 : 31,305.31 = 14,291.86 : x
  2. Step 2: Convert to fraction form
    20,881.94/31,305.31 = 14,291.86/x
  3. Step 3: Cross multiply
    20,881.94x = 31,305.31 × 14,291.86
  4. Step 4: Simplify right side
    20,881.94x = 447,411,107.78
  5. Step 5: Solve for x
    x = 447,411,107.78/20,881.94
  6. Step 6: Final answer
    x = 21,425.74

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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.