Home / 12,764.45-19,146.68-3,999.40

Finding the Fourth Proportional to 12,764.45, 19,146.68 and 3,999.40

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Solution

The fourth proportional to 12,764.45, 19,146.68 and 3,999.40 is: 5,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,764.45 : 19,146.68 = 3,999.40 : x
  2. Step 2: Convert to fraction form
    12,764.45/19,146.68 = 3,999.40/x
  3. Step 3: Cross multiply
    12,764.45x = 19,146.68 × 3,999.40
  4. Step 4: Simplify right side
    12,764.45x = 76,575,231.99
  5. Step 5: Solve for x
    x = 76,575,231.99/12,764.45
  6. Step 6: Final answer
    x = 5,999.10

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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.