Home / 12,168.09-18,252.90-5,146.79

Finding the Fourth Proportional to 12,168.09, 18,252.90 and 5,146.79

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Solution

The fourth proportional to 12,168.09, 18,252.90 and 5,146.79 is: 7,720.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.09 : 18,252.90 = 5,146.79 : x
  2. Step 2: Convert to fraction form
    12,168.09/18,252.90 = 5,146.79/x
  3. Step 3: Cross multiply
    12,168.09x = 18,252.90 × 5,146.79
  4. Step 4: Simplify right side
    12,168.09x = 93,943,843.19
  5. Step 5: Solve for x
    x = 93,943,843.19/12,168.09
  6. Step 6: Final answer
    x = 7,720.51

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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.