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Finding the Fourth Proportional to 25,356.88, 38,035.32 and 19,801.90

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Solution

The fourth proportional to 25,356.88, 38,035.32 and 19,801.90 is: 29,702.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,356.88 : 38,035.32 = 19,801.90 : x
  2. Step 2: Convert to fraction form
    25,356.88/38,035.32 = 19,801.90/x
  3. Step 3: Cross multiply
    25,356.88x = 38,035.32 × 19,801.90
  4. Step 4: Simplify right side
    25,356.88x = 753,171,603.11
  5. Step 5: Solve for x
    x = 753,171,603.11/25,356.88
  6. Step 6: Final answer
    x = 29,702.85

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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.