Home / 20,640.02-28,488.33-11,692.80

Finding the Fourth Proportional to 20,640.02, 28,488.33 and 11,692.80

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Solution

The fourth proportional to 20,640.02, 28,488.33 and 11,692.80 is: 16,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,640.02 : 28,488.33 = 11,692.80 : x
  2. Step 2: Convert to fraction form
    20,640.02/28,488.33 = 11,692.80/x
  3. Step 3: Cross multiply
    20,640.02x = 28,488.33 × 11,692.80
  4. Step 4: Simplify right side
    20,640.02x = 333,108,238.19
  5. Step 5: Solve for x
    x = 333,108,238.19/20,640.02
  6. Step 6: Final answer
    x = 16,138.95

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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.