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Finding the Fourth Proportional to 25,218, 34,801.92 and 14,040

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Solution

The fourth proportional to 25,218, 34,801.92 and 14,040 is: 19,375.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,218 : 34,801.92 = 14,040 : x
  2. Step 2: Convert to fraction form
    25,218/34,801.92 = 14,040/x
  3. Step 3: Cross multiply
    25,218x = 34,801.92 × 14,040
  4. Step 4: Simplify right side
    25,218x = 488,618,956.80
  5. Step 5: Solve for x
    x = 488,618,956.80/25,218
  6. Step 6: Final answer
    x = 19,375.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.