Home / 11,129.92-16,696.80-5,281.60

Finding the Fourth Proportional to 11,129.92, 16,696.80 and 5,281.60

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Solution

The fourth proportional to 11,129.92, 16,696.80 and 5,281.60 is: 7,923.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.92 : 16,696.80 = 5,281.60 : x
  2. Step 2: Convert to fraction form
    11,129.92/16,696.80 = 5,281.60/x
  3. Step 3: Cross multiply
    11,129.92x = 16,696.80 × 5,281.60
  4. Step 4: Simplify right side
    11,129.92x = 88,185,818.88
  5. Step 5: Solve for x
    x = 88,185,818.88/11,129.92
  6. Step 6: Final answer
    x = 7,923.31

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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.