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Finding the Fourth Proportional to 12,479.97, 18,714.48 and 4,683.31

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Solution

The fourth proportional to 12,479.97, 18,714.48 and 4,683.31 is: 7,022.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.97 : 18,714.48 = 4,683.31 : x
  2. Step 2: Convert to fraction form
    12,479.97/18,714.48 = 4,683.31/x
  3. Step 3: Cross multiply
    12,479.97x = 18,714.48 × 4,683.31
  4. Step 4: Simplify right side
    12,479.97x = 87,645,769.82
  5. Step 5: Solve for x
    x = 87,645,769.82/12,479.97
  6. Step 6: Final answer
    x = 7,022.92

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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.