Home / 11,249.92-15,518.40-6,770.56

Finding the Fourth Proportional to 11,249.92, 15,518.40 and 6,770.56

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Solution

The fourth proportional to 11,249.92, 15,518.40 and 6,770.56 is: 9,339.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,249.92 : 15,518.40 = 6,770.56 : x
  2. Step 2: Convert to fraction form
    11,249.92/15,518.40 = 6,770.56/x
  3. Step 3: Cross multiply
    11,249.92x = 15,518.40 × 6,770.56
  4. Step 4: Simplify right side
    11,249.92x = 105,068,258.30
  5. Step 5: Solve for x
    x = 105,068,258.30/11,249.92
  6. Step 6: Final answer
    x = 9,339.47

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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.