Home / 10,339.92-15,511.80-4,789.60

Finding the Fourth Proportional to 10,339.92, 15,511.80 and 4,789.60

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Solution

The fourth proportional to 10,339.92, 15,511.80 and 4,789.60 is: 7,185.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,339.92 : 15,511.80 = 4,789.60 : x
  2. Step 2: Convert to fraction form
    10,339.92/15,511.80 = 4,789.60/x
  3. Step 3: Cross multiply
    10,339.92x = 15,511.80 × 4,789.60
  4. Step 4: Simplify right side
    10,339.92x = 74,295,317.28
  5. Step 5: Solve for x
    x = 74,295,317.28/10,339.92
  6. Step 6: Final answer
    x = 7,185.29

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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.