Home / 12,346.72-18,517.20-3,579.28

Finding the Fourth Proportional to 12,346.72, 18,517.20 and 3,579.28

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Solution

The fourth proportional to 12,346.72, 18,517.20 and 3,579.28 is: 5,368.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,346.72 : 18,517.20 = 3,579.28 : x
  2. Step 2: Convert to fraction form
    12,346.72/18,517.20 = 3,579.28/x
  3. Step 3: Cross multiply
    12,346.72x = 18,517.20 × 3,579.28
  4. Step 4: Simplify right side
    12,346.72x = 66,278,243.62
  5. Step 5: Solve for x
    x = 66,278,243.62/12,346.72
  6. Step 6: Final answer
    x = 5,368.09

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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.