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Finding the Fourth Proportional to 13,692.79, 20,545.50 and 5,375.01

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Solution

The fourth proportional to 13,692.79, 20,545.50 and 5,375.01 is: 8,064.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.79 : 20,545.50 = 5,375.01 : x
  2. Step 2: Convert to fraction form
    13,692.79/20,545.50 = 5,375.01/x
  3. Step 3: Cross multiply
    13,692.79x = 20,545.50 × 5,375.01
  4. Step 4: Simplify right side
    13,692.79x = 110,432,267.96
  5. Step 5: Solve for x
    x = 110,432,267.96/13,692.79
  6. Step 6: Final answer
    x = 8,064.99

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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.