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Finding the Fourth Proportional to 10,692.65, 16,039.88 and 3,940.08

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Solution

The fourth proportional to 10,692.65, 16,039.88 and 3,940.08 is: 5,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,692.65 : 16,039.88 = 3,940.08 : x
  2. Step 2: Convert to fraction form
    10,692.65/16,039.88 = 3,940.08/x
  3. Step 3: Cross multiply
    10,692.65x = 16,039.88 × 3,940.08
  4. Step 4: Simplify right side
    10,692.65x = 63,198,420.24
  5. Step 5: Solve for x
    x = 63,198,420.24/10,692.65
  6. Step 6: Final answer
    x = 5,910.45

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1.5x scale

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.