Home / 11,213.34-16,821.81-3,421.50

Finding the Fourth Proportional to 11,213.34, 16,821.81 and 3,421.50

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Solution

The fourth proportional to 11,213.34, 16,821.81 and 3,421.50 is: 5,132.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.34 : 16,821.81 = 3,421.50 : x
  2. Step 2: Convert to fraction form
    11,213.34/16,821.81 = 3,421.50/x
  3. Step 3: Cross multiply
    11,213.34x = 16,821.81 × 3,421.50
  4. Step 4: Simplify right side
    11,213.34x = 57,555,822.92
  5. Step 5: Solve for x
    x = 57,555,822.92/11,213.34
  6. Step 6: Final answer
    x = 5,132.80

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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.