Home / 18,968.82-28,470.46-9,615.36

Finding the Fourth Proportional to 18,968.82, 28,470.46 and 9,615.36

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Solution

The fourth proportional to 18,968.82, 28,470.46 and 9,615.36 is: 14,431.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.82 : 28,470.46 = 9,615.36 : x
  2. Step 2: Convert to fraction form
    18,968.82/28,470.46 = 9,615.36/x
  3. Step 3: Cross multiply
    18,968.82x = 28,470.46 × 9,615.36
  4. Step 4: Simplify right side
    18,968.82x = 273,753,722.27
  5. Step 5: Solve for x
    x = 273,753,722.27/18,968.82
  6. Step 6: Final answer
    x = 14,431.77

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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.