Home / 11,420.96-17,119.84-7,723.61

Finding the Fourth Proportional to 11,420.96, 17,119.84 and 7,723.61

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Solution

The fourth proportional to 11,420.96, 17,119.84 and 7,723.61 is: 11,577.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.96 : 17,119.84 = 7,723.61 : x
  2. Step 2: Convert to fraction form
    11,420.96/17,119.84 = 7,723.61/x
  3. Step 3: Cross multiply
    11,420.96x = 17,119.84 × 7,723.61
  4. Step 4: Simplify right side
    11,420.96x = 132,226,928.80
  5. Step 5: Solve for x
    x = 132,226,928.80/11,420.96
  6. Step 6: Final answer
    x = 11,577.57

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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.