Home / 12,215.85-18,324.51-3,451.41

Finding the Fourth Proportional to 12,215.85, 18,324.51 and 3,451.41

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Solution

The fourth proportional to 12,215.85, 18,324.51 and 3,451.41 is: 5,177.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.85 : 18,324.51 = 3,451.41 : x
  2. Step 2: Convert to fraction form
    12,215.85/18,324.51 = 3,451.41/x
  3. Step 3: Cross multiply
    12,215.85x = 18,324.51 × 3,451.41
  4. Step 4: Simplify right side
    12,215.85x = 63,245,397.06
  5. Step 5: Solve for x
    x = 63,245,397.06/12,215.85
  6. Step 6: Final answer
    x = 5,177.32

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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.