Home / 13,434.05-18,540.92-8,056.78

Finding the Fourth Proportional to 13,434.05, 18,540.92 and 8,056.78

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Solution

The fourth proportional to 13,434.05, 18,540.92 and 8,056.78 is: 11,119.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.05 : 18,540.92 = 8,056.78 : x
  2. Step 2: Convert to fraction form
    13,434.05/18,540.92 = 8,056.78/x
  3. Step 3: Cross multiply
    13,434.05x = 18,540.92 × 8,056.78
  4. Step 4: Simplify right side
    13,434.05x = 149,380,113.44
  5. Step 5: Solve for x
    x = 149,380,113.44/13,434.05
  6. Step 6: Final answer
    x = 11,119.51

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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.