Home / 10,811.85-16,219.47-2,914.68

Finding the Fourth Proportional to 10,811.85, 16,219.47 and 2,914.68

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Solution

The fourth proportional to 10,811.85, 16,219.47 and 2,914.68 is: 4,372.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,811.85 : 16,219.47 = 2,914.68 : x
  2. Step 2: Convert to fraction form
    10,811.85/16,219.47 = 2,914.68/x
  3. Step 3: Cross multiply
    10,811.85x = 16,219.47 × 2,914.68
  4. Step 4: Simplify right side
    10,811.85x = 47,274,564.82
  5. Step 5: Solve for x
    x = 47,274,564.82/10,811.85
  6. Step 6: Final answer
    x = 4,372.48

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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.