Home / 12,919.70-19,354.82-8,739.18

Finding the Fourth Proportional to 12,919.70, 19,354.82 and 8,739.18

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Solution

The fourth proportional to 12,919.70, 19,354.82 and 8,739.18 is: 13,092.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.70 : 19,354.82 = 8,739.18 : x
  2. Step 2: Convert to fraction form
    12,919.70/19,354.82 = 8,739.18/x
  3. Step 3: Cross multiply
    12,919.70x = 19,354.82 × 8,739.18
  4. Step 4: Simplify right side
    12,919.70x = 169,145,255.85
  5. Step 5: Solve for x
    x = 169,145,255.85/12,919.70
  6. Step 6: Final answer
    x = 13,092.04

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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.