Home / 19,964.98-29,951.60-8,118.75

Finding the Fourth Proportional to 19,964.98, 29,951.60 and 8,118.75

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Solution

The fourth proportional to 19,964.98, 29,951.60 and 8,118.75 is: 12,179.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,964.98 : 29,951.60 = 8,118.75 : x
  2. Step 2: Convert to fraction form
    19,964.98/29,951.60 = 8,118.75/x
  3. Step 3: Cross multiply
    19,964.98x = 29,951.60 × 8,118.75
  4. Step 4: Simplify right side
    19,964.98x = 243,169,511.91
  5. Step 5: Solve for x
    x = 243,169,511.91/19,964.98
  6. Step 6: Final answer
    x = 12,179.81

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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.