Home / 11,261.45-15,540.79-6,785.39

Finding the Fourth Proportional to 11,261.45, 15,540.79 and 6,785.39

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Solution

The fourth proportional to 11,261.45, 15,540.79 and 6,785.39 is: 9,363.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,261.45 : 15,540.79 = 6,785.39 : x
  2. Step 2: Convert to fraction form
    11,261.45/15,540.79 = 6,785.39/x
  3. Step 3: Cross multiply
    11,261.45x = 15,540.79 × 6,785.39
  4. Step 4: Simplify right side
    11,261.45x = 105,450,209.43
  5. Step 5: Solve for x
    x = 105,450,209.43/11,261.45
  6. Step 6: Final answer
    x = 9,363.83

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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.