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Finding the Fourth Proportional to 23,978.88, 35,967.51 and 6,447.78

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Solution

The fourth proportional to 23,978.88, 35,967.51 and 6,447.78 is: 9,671.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,978.88 : 35,967.51 = 6,447.78 : x
  2. Step 2: Convert to fraction form
    23,978.88/35,967.51 = 6,447.78/x
  3. Step 3: Cross multiply
    23,978.88x = 35,967.51 × 6,447.78
  4. Step 4: Simplify right side
    23,978.88x = 231,910,591.63
  5. Step 5: Solve for x
    x = 231,910,591.63/23,978.88
  6. Step 6: Final answer
    x = 9,671.45

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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.