Home / 12,278.36-18,418.92-3,956.48

Finding the Fourth Proportional to 12,278.36, 18,418.92 and 3,956.48

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Solution

The fourth proportional to 12,278.36, 18,418.92 and 3,956.48 is: 5,935.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.36 : 18,418.92 = 3,956.48 : x
  2. Step 2: Convert to fraction form
    12,278.36/18,418.92 = 3,956.48/x
  3. Step 3: Cross multiply
    12,278.36x = 18,418.92 × 3,956.48
  4. Step 4: Simplify right side
    12,278.36x = 72,874,088.60
  5. Step 5: Solve for x
    x = 72,874,088.60/12,278.36
  6. Step 6: Final answer
    x = 5,935.16

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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.