Home / 20,645.45-28,491.10-11,692.92

Finding the Fourth Proportional to 20,645.45, 28,491.10 and 11,692.92

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Solution

The fourth proportional to 20,645.45, 28,491.10 and 11,692.92 is: 16,136.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.45 : 28,491.10 = 11,692.92 : x
  2. Step 2: Convert to fraction form
    20,645.45/28,491.10 = 11,692.92/x
  3. Step 3: Cross multiply
    20,645.45x = 28,491.10 × 11,692.92
  4. Step 4: Simplify right side
    20,645.45x = 333,144,153.01
  5. Step 5: Solve for x
    x = 333,144,153.01/20,645.45
  6. Step 6: Final answer
    x = 16,136.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.