Home / 10,639.54-15,959.30-4,789.32

Finding the Fourth Proportional to 10,639.54, 15,959.30 and 4,789.32

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Solution

The fourth proportional to 10,639.54, 15,959.30 and 4,789.32 is: 7,183.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.54 : 15,959.30 = 4,789.32 : x
  2. Step 2: Convert to fraction form
    10,639.54/15,959.30 = 4,789.32/x
  3. Step 3: Cross multiply
    10,639.54x = 15,959.30 × 4,789.32
  4. Step 4: Simplify right side
    10,639.54x = 76,434,194.68
  5. Step 5: Solve for x
    x = 76,434,194.68/10,639.54
  6. Step 6: Final answer
    x = 7,183.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.