Home / 12,819.15-19,238.46-8,649.27

Finding the Fourth Proportional to 12,819.15, 19,238.46 and 8,649.27

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Solution

The fourth proportional to 12,819.15, 19,238.46 and 8,649.27 is: 12,980.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.15 : 19,238.46 = 8,649.27 : x
  2. Step 2: Convert to fraction form
    12,819.15/19,238.46 = 8,649.27/x
  3. Step 3: Cross multiply
    12,819.15x = 19,238.46 × 8,649.27
  4. Step 4: Simplify right side
    12,819.15x = 166,398,634.92
  5. Step 5: Solve for x
    x = 166,398,634.92/12,819.15
  6. Step 6: Final answer
    x = 12,980.47

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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.