Home / 19,976.60-29,964.90-8,290.74

Finding the Fourth Proportional to 19,976.60, 29,964.90 and 8,290.74

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Solution

The fourth proportional to 19,976.60, 29,964.90 and 8,290.74 is: 12,436.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,976.60 : 29,964.90 = 8,290.74 : x
  2. Step 2: Convert to fraction form
    19,976.60/29,964.90 = 8,290.74/x
  3. Step 3: Cross multiply
    19,976.60x = 29,964.90 × 8,290.74
  4. Step 4: Simplify right side
    19,976.60x = 248,431,195.03
  5. Step 5: Solve for x
    x = 248,431,195.03/19,976.60
  6. Step 6: Final answer
    x = 12,436.11

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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.