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Finding the Fourth Proportional to 10,911, 16,366.50 and 2,703

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Solution

The fourth proportional to 10,911, 16,366.50 and 2,703 is: 4,054.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911 : 16,366.50 = 2,703 : x
  2. Step 2: Convert to fraction form
    10,911/16,366.50 = 2,703/x
  3. Step 3: Cross multiply
    10,911x = 16,366.50 × 2,703
  4. Step 4: Simplify right side
    10,911x = 44,238,649.50
  5. Step 5: Solve for x
    x = 44,238,649.50/10,911
  6. Step 6: Final answer
    x = 4,054.50

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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.