Home / 13,229.40-18,256.94-7,261.28

Finding the Fourth Proportional to 13,229.40, 18,256.94 and 7,261.28

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Solution

The fourth proportional to 13,229.40, 18,256.94 and 7,261.28 is: 10,020.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,229.40 : 18,256.94 = 7,261.28 : x
  2. Step 2: Convert to fraction form
    13,229.40/18,256.94 = 7,261.28/x
  3. Step 3: Cross multiply
    13,229.40x = 18,256.94 × 7,261.28
  4. Step 4: Simplify right side
    13,229.40x = 132,568,753.28
  5. Step 5: Solve for x
    x = 132,568,753.28/13,229.40
  6. Step 6: Final answer
    x = 10,020.77

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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.