Home / 11,120.64-16,679.68-2,913.28

Finding the Fourth Proportional to 11,120.64, 16,679.68 and 2,913.28

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Solution

The fourth proportional to 11,120.64, 16,679.68 and 2,913.28 is: 4,369.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.64 : 16,679.68 = 2,913.28 : x
  2. Step 2: Convert to fraction form
    11,120.64/16,679.68 = 2,913.28/x
  3. Step 3: Cross multiply
    11,120.64x = 16,679.68 × 2,913.28
  4. Step 4: Simplify right side
    11,120.64x = 48,592,578.15
  5. Step 5: Solve for x
    x = 48,592,578.15/11,120.64
  6. Step 6: Final answer
    x = 4,369.58

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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.