Home / 10,929.70-16,388.79-4,766.50

Finding the Fourth Proportional to 10,929.70, 16,388.79 and 4,766.50

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Solution

The fourth proportional to 10,929.70, 16,388.79 and 4,766.50 is: 7,147.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.70 : 16,388.79 = 4,766.50 : x
  2. Step 2: Convert to fraction form
    10,929.70/16,388.79 = 4,766.50/x
  3. Step 3: Cross multiply
    10,929.70x = 16,388.79 × 4,766.50
  4. Step 4: Simplify right side
    10,929.70x = 78,117,167.54
  5. Step 5: Solve for x
    x = 78,117,167.54/10,929.70
  6. Step 6: Final answer
    x = 7,147.24

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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.