Home / 11,299.20-16,929.60-9,340.80

Finding the Fourth Proportional to 11,299.20, 16,929.60 and 9,340.80

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Solution

The fourth proportional to 11,299.20, 16,929.60 and 9,340.80 is: 13,995.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,299.20 : 16,929.60 = 9,340.80 : x
  2. Step 2: Convert to fraction form
    11,299.20/16,929.60 = 9,340.80/x
  3. Step 3: Cross multiply
    11,299.20x = 16,929.60 × 9,340.80
  4. Step 4: Simplify right side
    11,299.20x = 158,136,007.68
  5. Step 5: Solve for x
    x = 158,136,007.68/11,299.20
  6. Step 6: Final answer
    x = 13,995.33

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1.5x scale

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.