Home / 12,290.78-18,418.62-5,261.06

Finding the Fourth Proportional to 12,290.78, 18,418.62 and 5,261.06

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Solution

The fourth proportional to 12,290.78, 18,418.62 and 5,261.06 is: 7,884.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.78 : 18,418.62 = 5,261.06 : x
  2. Step 2: Convert to fraction form
    12,290.78/18,418.62 = 5,261.06/x
  3. Step 3: Cross multiply
    12,290.78x = 18,418.62 × 5,261.06
  4. Step 4: Simplify right side
    12,290.78x = 96,901,464.94
  5. Step 5: Solve for x
    x = 96,901,464.94/12,290.78
  6. Step 6: Final answer
    x = 7,884.08

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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.