Home / 12,974.72-19,459.92-5,181.44

Finding the Fourth Proportional to 12,974.72, 19,459.92 and 5,181.44

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Solution

The fourth proportional to 12,974.72, 19,459.92 and 5,181.44 is: 7,771.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,974.72 : 19,459.92 = 5,181.44 : x
  2. Step 2: Convert to fraction form
    12,974.72/19,459.92 = 5,181.44/x
  3. Step 3: Cross multiply
    12,974.72x = 19,459.92 × 5,181.44
  4. Step 4: Simplify right side
    12,974.72x = 100,830,407.88
  5. Step 5: Solve for x
    x = 100,830,407.88/12,974.72
  6. Step 6: Final answer
    x = 7,771.30

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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.