Home / 12,777.58-19,164.84-3,418.30

Finding the Fourth Proportional to 12,777.58, 19,164.84 and 3,418.30

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Solution

The fourth proportional to 12,777.58, 19,164.84 and 3,418.30 is: 5,127.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.58 : 19,164.84 = 3,418.30 : x
  2. Step 2: Convert to fraction form
    12,777.58/19,164.84 = 3,418.30/x
  3. Step 3: Cross multiply
    12,777.58x = 19,164.84 × 3,418.30
  4. Step 4: Simplify right side
    12,777.58x = 65,511,172.57
  5. Step 5: Solve for x
    x = 65,511,172.57/12,777.58
  6. Step 6: Final answer
    x = 5,127.04

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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.