Home / 12,628.80-18,947.25-5,234.04

Finding the Fourth Proportional to 12,628.80, 18,947.25 and 5,234.04

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Solution

The fourth proportional to 12,628.80, 18,947.25 and 5,234.04 is: 7,852.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.80 : 18,947.25 = 5,234.04 : x
  2. Step 2: Convert to fraction form
    12,628.80/18,947.25 = 5,234.04/x
  3. Step 3: Cross multiply
    12,628.80x = 18,947.25 × 5,234.04
  4. Step 4: Simplify right side
    12,628.80x = 99,170,664.39
  5. Step 5: Solve for x
    x = 99,170,664.39/12,628.80
  6. Step 6: Final answer
    x = 7,852.74

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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.