Home / 12,743.29-19,114.26-3,977.20

Finding the Fourth Proportional to 12,743.29, 19,114.26 and 3,977.20

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Solution

The fourth proportional to 12,743.29, 19,114.26 and 3,977.20 is: 5,965.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.29 : 19,114.26 = 3,977.20 : x
  2. Step 2: Convert to fraction form
    12,743.29/19,114.26 = 3,977.20/x
  3. Step 3: Cross multiply
    12,743.29x = 19,114.26 × 3,977.20
  4. Step 4: Simplify right side
    12,743.29x = 76,021,234.87
  5. Step 5: Solve for x
    x = 76,021,234.87/12,743.29
  6. Step 6: Final answer
    x = 5,965.59

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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.