Home / 19,972.44-29,940.84-8,278.20

Finding the Fourth Proportional to 19,972.44, 29,940.84 and 8,278.20

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Solution

The fourth proportional to 19,972.44, 29,940.84 and 8,278.20 is: 12,409.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,972.44 : 29,940.84 = 8,278.20 : x
  2. Step 2: Convert to fraction form
    19,972.44/29,940.84 = 8,278.20/x
  3. Step 3: Cross multiply
    19,972.44x = 29,940.84 × 8,278.20
  4. Step 4: Simplify right side
    19,972.44x = 247,856,261.69
  5. Step 5: Solve for x
    x = 247,856,261.69/19,972.44
  6. Step 6: Final answer
    x = 12,409.91

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1.5x scale

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.