Home / 10,639.92-15,959.88-4,789.68

Finding the Fourth Proportional to 10,639.92, 15,959.88 and 4,789.68

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Solution

The fourth proportional to 10,639.92, 15,959.88 and 4,789.68 is: 7,184.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.92 : 15,959.88 = 4,789.68 : x
  2. Step 2: Convert to fraction form
    10,639.92/15,959.88 = 4,789.68/x
  3. Step 3: Cross multiply
    10,639.92x = 15,959.88 × 4,789.68
  4. Step 4: Simplify right side
    10,639.92x = 76,442,718.04
  5. Step 5: Solve for x
    x = 76,442,718.04/10,639.92
  6. Step 6: Final answer
    x = 7,184.52

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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.