Home / 13,229.66-18,257.22-7,261.71

Finding the Fourth Proportional to 13,229.66, 18,257.22 and 7,261.71

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Solution

The fourth proportional to 13,229.66, 18,257.22 and 7,261.71 is: 10,021.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,229.66 : 18,257.22 = 7,261.71 : x
  2. Step 2: Convert to fraction form
    13,229.66/18,257.22 = 7,261.71/x
  3. Step 3: Cross multiply
    13,229.66x = 18,257.22 × 7,261.71
  4. Step 4: Simplify right side
    13,229.66x = 132,578,637.05
  5. Step 5: Solve for x
    x = 132,578,637.05/13,229.66
  6. Step 6: Final answer
    x = 10,021.32

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.