Home / 11,310.48-16,965.36-3,920.40

Finding the Fourth Proportional to 11,310.48, 16,965.36 and 3,920.40

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Solution

The fourth proportional to 11,310.48, 16,965.36 and 3,920.40 is: 5,880.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,310.48 : 16,965.36 = 3,920.40 : x
  2. Step 2: Convert to fraction form
    11,310.48/16,965.36 = 3,920.40/x
  3. Step 3: Cross multiply
    11,310.48x = 16,965.36 × 3,920.40
  4. Step 4: Simplify right side
    11,310.48x = 66,510,997.34
  5. Step 5: Solve for x
    x = 66,510,997.34/11,310.48
  6. Step 6: Final answer
    x = 5,880.48

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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.