Home / 11,439.44-15,783.84-7,245.28

Finding the Fourth Proportional to 11,439.44, 15,783.84 and 7,245.28

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Solution

The fourth proportional to 11,439.44, 15,783.84 and 7,245.28 is: 9,996.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.44 : 15,783.84 = 7,245.28 : x
  2. Step 2: Convert to fraction form
    11,439.44/15,783.84 = 7,245.28/x
  3. Step 3: Cross multiply
    11,439.44x = 15,783.84 × 7,245.28
  4. Step 4: Simplify right side
    11,439.44x = 114,358,340.28
  5. Step 5: Solve for x
    x = 114,358,340.28/11,439.44
  6. Step 6: Final answer
    x = 9,996.85

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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.