Home / 11,938.61-17,911.49-4,819.18

Finding the Fourth Proportional to 11,938.61, 17,911.49 and 4,819.18

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Solution

The fourth proportional to 11,938.61, 17,911.49 and 4,819.18 is: 7,230.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,938.61 : 17,911.49 = 4,819.18 : x
  2. Step 2: Convert to fraction form
    11,938.61/17,911.49 = 4,819.18/x
  3. Step 3: Cross multiply
    11,938.61x = 17,911.49 × 4,819.18
  4. Step 4: Simplify right side
    11,938.61x = 86,318,625.50
  5. Step 5: Solve for x
    x = 86,318,625.50/11,938.61
  6. Step 6: Final answer
    x = 7,230.21

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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.