Home / 11,928.72-17,889.60-4,812.96

Finding the Fourth Proportional to 11,928.72, 17,889.60 and 4,812.96

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Solution

The fourth proportional to 11,928.72, 17,889.60 and 4,812.96 is: 7,218.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928.72 : 17,889.60 = 4,812.96 : x
  2. Step 2: Convert to fraction form
    11,928.72/17,889.60 = 4,812.96/x
  3. Step 3: Cross multiply
    11,928.72x = 17,889.60 × 4,812.96
  4. Step 4: Simplify right side
    11,928.72x = 86,101,929.22
  5. Step 5: Solve for x
    x = 86,101,929.22/11,928.72
  6. Step 6: Final answer
    x = 7,218.04

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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.