Home / 12,781.90-19,169.07-5,757.85

Finding the Fourth Proportional to 12,781.90, 19,169.07 and 5,757.85

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Solution

The fourth proportional to 12,781.90, 19,169.07 and 5,757.85 is: 8,635.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781.90 : 19,169.07 = 5,757.85 : x
  2. Step 2: Convert to fraction form
    12,781.90/19,169.07 = 5,757.85/x
  3. Step 3: Cross multiply
    12,781.90x = 19,169.07 × 5,757.85
  4. Step 4: Simplify right side
    12,781.90x = 110,372,629.70
  5. Step 5: Solve for x
    x = 110,372,629.70/12,781.90
  6. Step 6: Final answer
    x = 8,635.07

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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.