Home / 12,620.52-18,936-5,226.48

Finding the Fourth Proportional to 12,620.52, 18,936 and 5,226.48

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Solution

The fourth proportional to 12,620.52, 18,936 and 5,226.48 is: 7,841.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.52 : 18,936 = 5,226.48 : x
  2. Step 2: Convert to fraction form
    12,620.52/18,936 = 5,226.48/x
  3. Step 3: Cross multiply
    12,620.52x = 18,936 × 5,226.48
  4. Step 4: Simplify right side
    12,620.52x = 98,968,625.28
  5. Step 5: Solve for x
    x = 98,968,625.28/12,620.52
  6. Step 6: Final answer
    x = 7,841.88

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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.