Home / 12,656.39-18,984.92-3,891.31

Finding the Fourth Proportional to 12,656.39, 18,984.92 and 3,891.31

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Solution

The fourth proportional to 12,656.39, 18,984.92 and 3,891.31 is: 5,837.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.39 : 18,984.92 = 3,891.31 : x
  2. Step 2: Convert to fraction form
    12,656.39/18,984.92 = 3,891.31/x
  3. Step 3: Cross multiply
    12,656.39x = 18,984.92 × 3,891.31
  4. Step 4: Simplify right side
    12,656.39x = 73,876,142.13
  5. Step 5: Solve for x
    x = 73,876,142.13/12,656.39
  6. Step 6: Final answer
    x = 5,837.07

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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.