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Finding the Fourth Proportional to 14,978.76, 22,470.48 and 6,661.68

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Solution

The fourth proportional to 14,978.76, 22,470.48 and 6,661.68 is: 9,993.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,978.76 : 22,470.48 = 6,661.68 : x
  2. Step 2: Convert to fraction form
    14,978.76/22,470.48 = 6,661.68/x
  3. Step 3: Cross multiply
    14,978.76x = 22,470.48 × 6,661.68
  4. Step 4: Simplify right side
    14,978.76x = 149,691,147.21
  5. Step 5: Solve for x
    x = 149,691,147.21/14,978.76
  6. Step 6: Final answer
    x = 9,993.56

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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.