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Finding the Fourth Proportional to 10,692.40, 16,043.40 and 5,143.60

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Solution

The fourth proportional to 10,692.40, 16,043.40 and 5,143.60 is: 7,717.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,692.40 : 16,043.40 = 5,143.60 : x
  2. Step 2: Convert to fraction form
    10,692.40/16,043.40 = 5,143.60/x
  3. Step 3: Cross multiply
    10,692.40x = 16,043.40 × 5,143.60
  4. Step 4: Simplify right side
    10,692.40x = 82,520,832.24
  5. Step 5: Solve for x
    x = 82,520,832.24/10,692.40
  6. Step 6: Final answer
    x = 7,717.71

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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.