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Finding the Fourth Proportional to 10,692.40, 16,039.80 and 3,296.80

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Solution

The fourth proportional to 10,692.40, 16,039.80 and 3,296.80 is: 4,945.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,692.40 : 16,039.80 = 3,296.80 : x
  2. Step 2: Convert to fraction form
    10,692.40/16,039.80 = 3,296.80/x
  3. Step 3: Cross multiply
    10,692.40x = 16,039.80 × 3,296.80
  4. Step 4: Simplify right side
    10,692.40x = 52,880,012.64
  5. Step 5: Solve for x
    x = 52,880,012.64/10,692.40
  6. Step 6: Final answer
    x = 4,945.57

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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.