Home / 11,890.36-17,836.89-3,125.44

Finding the Fourth Proportional to 11,890.36, 17,836.89 and 3,125.44

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Solution

The fourth proportional to 11,890.36, 17,836.89 and 3,125.44 is: 4,688.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890.36 : 17,836.89 = 3,125.44 : x
  2. Step 2: Convert to fraction form
    11,890.36/17,836.89 = 3,125.44/x
  3. Step 3: Cross multiply
    11,890.36x = 17,836.89 × 3,125.44
  4. Step 4: Simplify right side
    11,890.36x = 55,748,129.48
  5. Step 5: Solve for x
    x = 55,748,129.48/11,890.36
  6. Step 6: Final answer
    x = 4,688.51

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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.