Home / 11,276.80-16,915.68-3,485.76

Finding the Fourth Proportional to 11,276.80, 16,915.68 and 3,485.76

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Solution

The fourth proportional to 11,276.80, 16,915.68 and 3,485.76 is: 5,228.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,276.80 : 16,915.68 = 3,485.76 : x
  2. Step 2: Convert to fraction form
    11,276.80/16,915.68 = 3,485.76/x
  3. Step 3: Cross multiply
    11,276.80x = 16,915.68 × 3,485.76
  4. Step 4: Simplify right side
    11,276.80x = 58,964,000.72
  5. Step 5: Solve for x
    x = 58,964,000.72/11,276.80
  6. Step 6: Final answer
    x = 5,228.79

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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.