Home / 12,344.70-18,519.93-3,579.78

Finding the Fourth Proportional to 12,344.70, 18,519.93 and 3,579.78

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Solution

The fourth proportional to 12,344.70, 18,519.93 and 3,579.78 is: 5,370.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,344.70 : 18,519.93 = 3,579.78 : x
  2. Step 2: Convert to fraction form
    12,344.70/18,519.93 = 3,579.78/x
  3. Step 3: Cross multiply
    12,344.70x = 18,519.93 × 3,579.78
  4. Step 4: Simplify right side
    12,344.70x = 66,297,275.02
  5. Step 5: Solve for x
    x = 66,297,275.02/12,344.70
  6. Step 6: Final answer
    x = 5,370.51

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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.