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Finding the Fourth Proportional to 25,791.93, 38,702.21 and 13,945.41

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Solution

The fourth proportional to 25,791.93, 38,702.21 and 13,945.41 is: 20,925.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,791.93 : 38,702.21 = 13,945.41 : x
  2. Step 2: Convert to fraction form
    25,791.93/38,702.21 = 13,945.41/x
  3. Step 3: Cross multiply
    25,791.93x = 38,702.21 × 13,945.41
  4. Step 4: Simplify right side
    25,791.93x = 539,718,116.63
  5. Step 5: Solve for x
    x = 539,718,116.63/25,791.93
  6. Step 6: Final answer
    x = 20,925.85

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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.